WO2002089568A1 - Laser light lure - Google Patents
Laser light lure Download PDFInfo
- Publication number
- WO2002089568A1 WO2002089568A1 PCT/GB2002/001991 GB0201991W WO02089568A1 WO 2002089568 A1 WO2002089568 A1 WO 2002089568A1 GB 0201991 W GB0201991 W GB 0201991W WO 02089568 A1 WO02089568 A1 WO 02089568A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser light
- species
- laser
- trawler
- light
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K85/00—Artificial bait for fishing
- A01K85/01—Artificial bait for fishing with light emission, sound emission, scent dispersal or the like
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
- A01K75/02—Illuminating devices for nets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K79/00—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery
- A01K79/02—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery by electrocution
Definitions
- the present invention relates to a laser light lure and particularly to a method of fishing incorporating a laser light lure mounted in a shaped device directly onto or below a fishing trawler or onto a trawler fishing net and/or aquaculture repositories.
- the invention also comprehends cephalopods, cetaceans, chordata pisces and arthropodum Crustacea.
- Prior art figure 1 shows a fish hook typically used for this purpose.
- Prior art figure 2 shows a section of netting as used in commercial trawling industries.
- Prior art Figure 3 shows a laser diode (3) diverging laser light beam (4) light collimator lens (5) and corrected parallel laser light beam (6) as found in a typical working laser diode model.
- Prior art Figure 4 shows a method of fishing with a trawler as used in commercial industry inclusive of a boat (7) attached to a trawl net by means of a net attachment ropes (8) to the net (9) to submerge below a waterline (11).
- Fish (10) are located by sonar echolocation methods (not shown) and boat (7) is driven to capture said fish (10) in accordance with usual practice.
- the first of the above specifications further relates to a radiated light from an under water laser to scatter or group a fish species using a suitable light source.
- a given aquatic e.g. fish species reacts differentially to a laser light source, thus cod and bass do not respond to a 532nM green laser whereas codling do, whiting and mullet fry, for example respond to red and green laser light.
- a red laser is more effective on a surface fish
- green is more effective on a mid-depth fish
- blue is more effective on deep-water species.
- These species are generally those to be found down to the following depths: - surface fish down to about 200 meters, middle depth fish down to about 200-800 meters, and deep fish down to about 800-3000 meters.
- Fish are normally devided into groups depending on their place in the ocean, by these groups, fishermen and marine biologists know where a particular species is to be found and the conditions within which the species is likely to be living. Demersal, pelagic and benthic are typically used terms. Combinations of these group names for example bentho-pelagic, refer to fish that are found on the deep ocean floor.
- This example includes a Loch Linnhe Scotland, whose waters are yellow coloured owing to the high peat content.
- the yellow coloured water quickly absorbs a laser in the green visible spectrum and subsequently the use of strong lasers is advised.
- the dominant adult and adult sized, dominant juvenile lens absorption spectra is taken into consideration here and one of the given UV sensitivities targeted to allow for this allowing capture.
- the remaining fish can then be left to mature themselves yielding further dominants that can be removed, as necessary.
- Non-dominant adults and non- dominant juveniles would have different lens absorption characteristics to the adult salmon and again a specific laser frequency would then be used for them as necessary.
- the majority of United Kingdom salmon are farfned in UK fisheries.
- Dominant adult salmon including dominant juveniles would be located in the uppermost part of the farm area, where they have access to the first food sources that land on the surface during normal feeding operations. Whatever is left of this food sinks to the bottom of the contained net area, whereupon the smaller non-dominant salmon then feed (Of which some are also adults but smaller, i.e.: Juvenile sized).
- fish farmers have the task of separating (or grading) the salmon for harvesting purposes. The process of harvesting is often slow and excessively stresses the fish, causing poor meat quality post-cull. The above given process could greatly improve the rate of capture.
- the spectral sensitivities of animal eye retinas can be very close. They are closer between a species of differing maturity than between differing species. These sensitivities are normally drawn as a curve, indicating the beginning of a particular wavelength of light sensitivity, rising to a maximum and falling again to a minimum. These curves, found by new microspectrophotometry techniques, display the bandwidth within which an animal can see a particular source of light of a particular wavelength or frequency. Where large numbers of overlapping curves occur (and they often do in animal biology) only the peak wavelengths (inducing behavioral responses like feeding) are targeted by the laser. Lasers themselves have very narrow bandwidths, usually plus or minus 10 nanometers of a peak emission. This helps greatly in their ability to target specific species.
- the present invention two forms of selecting/distracting fish species and/or other aquatic species.
- the first is targeting the fish species and/or other aquatic species drawing them specifically into a catch region, and second is targeting of fish species and/or other aquatic species and drawing them away from and/or distracting and/or repelling them from the catch region.
- An initial prototype was purchased in the form of two laser pens, one a class 3a, 532nm green laser light and a class la, 632nM red laser light pen. These were taken to various aquariums in order to determine the effects of this thereof on cod, codling, sea bass, whiting, gray mullet fry, tropical and other aquaria species.
- an initial prototype was constructed somewhat as shown in Figure 7 from an aluminium tube 200mm in diameter 1200mm long and with a wall thickness of 10mm. At the rounded head end borosilicate glass windows were secured to allow the passage of a single class 3b, 532nm green laser light beam from the center portion and four twenty-watt (eighty watts total) halogen filament based background lights to escape.
- the device was provided with control electronics and a depth activated pressure switch, positioned at the rear of the device, to enable the system. A bla and white camera was also fitted for recording purposes. The device was then towed at the rear of a trawler vessel. Results for the laser pens were as follows:
- the table indicates that it is possible to separate adult cod from juvenile codling consistently using a green 532nm laser and background light (from aquarium tank source). If whiting are present these too can be separated from both cod and codling with the addition of a red 632-nm laser. The haddock if also present could be distracted away from the catch by significantly and/or cyclically reducing the background light source levels.
- the inventors have also found that air contained within a towed laser-type device act like a swim bladder of a large predatory fish/mammal. The effect is to scare away some target aquatic species, e.g. fish species, since such a fish possesses a dorsal sensor that helps avoid predators. It is thus most desirable when utilising a laser-type device that this specific gravity is, or approaches; one i.e. the swim bladder principle is negated. Results from the tube device were interesting. The waters that were being tested at that time of year contained horse mackerel, cod and whiting. Responses from the trawlers on-board tracking equipment that represented fish as green dots (Owing to swim bladder signatures) showed a straight line of irregularly spaced dots.
- laser light aquatic species attractant and/or distractant device which comprises a laser light of a predetermined wavelength, characterised in that the species is preselected for catching and in that the wavelength of the laser light is selected to catch and/or distract the species concerned.
- the laser light given above may comprise of at least two laser lights of different wavelengths for example red and green. Alternatively there may be three or more wavelengths of which one is blue e.g.
- the device is filled with a resin/foam to give a value to the assembly at least approaches one. It is preferred that the one device is tethered to a mother ship preferably by means of an electrically conductive cable, but of course batteries may be used either within the ship or indeed within the device as necessary. Another preference is a device attached to the base of the mother ship on a gimbaled system providing a relatively stationary beam in relation to the motion of the mother ship.
- the device comprises an electric motor driving an angled mirror that deflects the rays of at least one laser of a predetermined wavelength via another reflective surface to the exterior to form inter alia a visible and/or humanly invisible (i.e. UV) continuous or discontinuous ring about the mouth of the trawler net and/or directed away from and /or into the mouth of the net as desired.
- the device may further comprise a self-levelling device and/or background lights.
- the device of the present invention may also comprise a differential pressure switch that switches from one laser and/or to another as the device falls through the various zones.
- the laser or lasers is/are mounted along with a camera on an X and Y axis driven platform contained within an optically clear hemispherical head unit on the device.
- Positional information for the mobile platform being derived from an echolocation device (sonar) mounted on the transportation device or via an electrically conductive tether to the trawler itself.
- Whiting for example can see (or react to) a red light laser probably as a function of laser brightness and/or an extended retinal peak bandwidth. It should also be noted that Lasers have also got a spectral bandwidth although narrow as part of their intrinsic properties. In some cases it may be necessary to included central or side bandwidth filters to narrow or express their frequencies further. In some other cases exact frequency lasers are currently unavailable until future developments in tunable types and/or dedicated frequency types become available. Similarly the method of laser deployment into its corresponding fishing environment will affect the outcome. Obviously the history of a particular species tends to derive its outcome and none more so than fish, that have had a very long period of time (and a very large area of water)! within which to qualify to their particular environments.
- Some of the above species have monochromatic (single colour vision spectra, owing to single rhodopsin pigment), such as the sergestes similis or mid-water shrimp. Others have dichromatic vision such as the teleost salmon and herring and others have trichromatic and tetrachromatic vision allowing them to see in all humanly visible colours and infrared or ultraviolet. Others like the dolphin (cetaceans) although a mammal, do not have the ability to even see the colour blue, which is unusual owing to its proximity to the surface waters.
- the term 'aquatic' also includes mollusca cephalopoda, chordata pisces, cetaceans and arthropodum Crustacea.
- the modulation frequency is altered according to water absorption and other characteristics.
- the modulation may define a mark to space ratio introduced into the immersion characteristics enabling either a solid, segmented or dotted line, light cone to be established in the sea for example.
- a means for preselecting an aquatic species such a salmon for grading purposes prior to culling is provided.
- According to a further aspect of the invention provides a means for pre-selecting an aquatic species such as cetaceans to prevent their capture during trawling operations.
- According to a further aspect of the invention provides laser light modulation to protect valuable by-catch species such as cetaceans from overexposure to laser radiation.
- ROV remotely operable vehicle
- microspectrophotometry data to aid in the selection of laser types for specific species capture.
- Figure 1 is a schematic view of a first prior art fish-hook
- Figure 2 is a schematic second prior art section of a trawler net
- Figure 3 shows a schematic view of third prior art laser diode assembly
- Figure 4 shows a schematic view of trawler and trawler net in the process of fishing
- Figure 5 shows a schematic view of a trawler and trawler net and submerged laser light trawler attachment in the process of fishing
- Figure 5a shows a schematic rear view of a trawler and submerged laser light attachment
- Figure 6 shows a schematic view of a trawler and a trawler net submerged laser light net attachment in the process of fishing
- Figure 7 shows a schematic side elevation view of a trawler/trawler net attachment in a preferred embodiment of a laser light lure in accordance with the present invention
- Figure 8 shows a schematic front elevation of a trawler net/net attachment in a preferred embodiment of the laser light according to the present invention
- Figure 9 shows a schematic rear elevation view of a trawler/trawler net attachment in a preferred embodiment of the laser light lure in accordance with the present invention
- Figure 10 shows a schematic side elevation of a trawler/trawler net attachment as in Figure 7 but with additions, and
- Figure 11 shows a side view in a section of one half of another device in accordance with the present invention.
- Figure 12 indicates the relationship between species spectral bandwidth and sensitivity to light as a function of depth.
- a trawler (7) provided towards its rear with ropes (8) holding a trawl net (9) in accordance with practices well known in the art.
- Fish (10) are shown diagrammatically, as is the sea surface (11).
- a tether (14) is to be found securing a device in accordance with the present invention (24) to the trawler for a said device (24) extending a beam (13) towards the mouth of the trawl net (9).
- the device according to the invention (24) is provided with lugs (15) which are secured to the neck of the trawl net (9) to attract fish therein too.
- the laser device (24) is shown secured to the trawler (7) by means of tethers (14) which may be electrically conductive if desired below the surface of the sea (11).
- the laser light lure (24) comprises two parts.
- the front casing (32) has a centrally threaded core (33) into which the pre-selected wavelength laser module (22) is fitted and secured with small threaded fastener (26).
- the purpose of the small threaded fasteners is to easily replace the laser module if changing to another pre-selected wavelength laser or replacement after laser failure during normal use and to maintain proper alignment in normal use.
- the secondary focusing lens (12) is fitted centrally along the same axis as the laser module (22) and is also secured with small threaded fastener (26).
- the purpose of these small threaded fasteners is to maintain the proper alignment in normal use and set the focal distance of the laser module (22) with respect to the secondary focusing lens (12).
- Between the small threaded fasteners of the second focusing lens (22) is a small compressible 'O' ring (25). The purpose of the 'O' ring is to prevent water ingress into the laser module (22).
- a large compressible 'O' ring (23).
- the purpose of this 'O' ring is to prevent water ingress between the front casing (31) and the rear casing (32) whilst maintaining access to the inside of the laser light lure (24) where the replaceable or preferably rechargeable battery (17) and the immersion control electronics (21) reside.
- the large internally threaded ring fastener (27) aids in compressing the large 'O' ring (23) whilst the front casing (32) and the rear casing (31) are being screwed together.
- the large ring fastener (27) is also a machined and/or die cast metal alloy and/or molded plastic component.
- a water depth pressure sensor (19) On the same axis as the laser module (22) at the rear of the casing (31) is a water depth pressure sensor (19) that has a variable depth setting by a potentiometer (not shown).
- the water depth sensor (19) is secured with small threaded fastener (26). Again a small 'O' ring (25) Is placed between the threaded fasteners to maintain water ingress protection.
- Water depth pressure sensor (19) is connected by electrical means (30) to the immersion control circuitry (21) and is a safety feature that may be omitted or bypassed as required.
- Above and below the water depth sensor (19) are two electrical contacts (18) mounted on an electrically insulating surface (28) on the rear casing (31) metal surface.
- the two electrical contacts (18) are connected by insulated electrical means (30) to the immersion control circuitry (21) through the apertures (34) in the rear casing (31).
- a waterproof sealant (25) fills the remaining part of two apertures (34), in order to provide protection from water ingress.
- the electrical contacts (18) turn on the laser module once it is immersed in water and provide all or part of the overall safety feature of the device. Owing to the hazardous nature of laser radiation and the requirements of safety to the operator of such equipment, these features may be incorporated into the laser light lure as desired.
- the immersion control electronics (21) which are connected by electrical means to the replaceable rechargeable battery (17) that are housed in the waterproof section.
- the rechargeable batteries (17) can be replaced by means of an electrically conductive cable (14) which tethers the device to the boat and through which power may be supplied to the device if desired.
- a white light bulb (35) that is of a higher density low wattage, type is one of four spaced equidistantly about the device of figure 10.
- a clear glass water ingress protected element (36) is disposed over the bulb (35).
- a reflective surface (37) provides a good surface to emit as much of the bulbs radiation forward as possible.
- the bulb (35) is in electrical contact with the electrical supply. The arrangement of figure 10 enables certain fish stocks to be caught and/or repelled efficaciously.
- FIG. 11 With reference to Figure 11 there is provided a casing (53) that is of a generally circular cross-section.
- the embodiment of Figure 11 is shown as one half of the whole for reasons of clarity. The other is identical to that described and/or the arrangement can terminate in a device that is shown as in Figure 11 or via remotely operable vehicle design (not shown).
- casing (53) is filled with a resin and/or rigid foam as in (54) and incorporates a differential pressure switch (not shown).
- a glass or optically clear plastic dome (40) which is linked to the casing (53) by a means of c O' rings (41) and secured in a watertight fashion (not shown).
- the 'O' rings (41) act to prevent water ingress.
- the high intensity bulbs (42) are actuated by means of electrical power either from the rechargeable batteries or from an electrically conductive tether (14) with electrical power from the trawler or other ship towing the device.
- the body of the casing (53) also comprises a speed controlled electrical motor (44) along with three lasers (two of which are numbered herein, 45 and 46) which are disposed equidistantly about a motor spindle (48). With one, two or all lasers (45 and 46) switched on the laser beam/beams «>6) hits right angle mirror pairs (47) while the motor (44) is running and rotating.
- An ellipsoidal mirror (49) which has the effect of displacing the laser lights to a ring without unduly scattering light.
- the device is retained in a desired mode e.g. horizontal by means of self-leveling devices (51) disposed about a casing (53).
- the self- leveling device (51) is driven by a pump (52).
- the mirror (49) is spring-loaded (50) to increase the diameter of the projected laser light cone with an increase in speed of the motor (44) and hence of the motor spindle (48).
- the mirror (49) has a calculated weight (56) placed on the underside and opposite end of the spring (50), to aid its motion to horizontal (from almost vertical) with increasing motor spindle (48) speed.
- the calculated weight (56) is designed so as not to introduce any excessive eccentricity to the motor spindle (48) during rotation and is approximately equal to a greater or lesser percentage of the spring (50) mass.
- the mirror (49) itself is supported by a free rotating pin type shaft (63) passing through the motor spindle shaft (48).
- the motor shaft spindle (48) itself is supported by bearings (60) to maintain concentricity during rotation.
- the replaceable laser housing (62) is held in position by dowels (57) secured to casing (53).
- the dowels (57) pass through a rubber shock resistant bumper ring (58) aiding mechanical protection to the lasers (45) and (46).
- Back-plate (61) acts to secure the motor (44) and the rear circular shock resistant rubber mat (65) into place.
- the laser housing (62) is again secured into place from the back-plate (61) end by means (not shown).
- Conductors from lasers (45) and (46) pass to the control electronics (67) and onto the batteries (not shown) by conductor (68).
- the pump (52) and differential pressure switch (not shown) is also connected to the control electronics (67) by electrical means (not shown).
- a laser selection region graph plotting light sensitivity increasing with depth, against aquatic species spectral bandwidth.
- the solid line curve representing shallow water species with lowest light sensitivity and widest spectral bandwidth.
- the intermittent line curve representing mid-water species with intermediate light sensitivity and intermediate spectral bandwidth.
- the dotted line curve representing deep-water species with highest light sensitivity and narrowest spectral bandwidth.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0327289A GB2391156A (en) | 2001-05-09 | 2002-05-01 | Laser light lure |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0111364A GB0111364D0 (en) | 2001-05-09 | 2001-05-09 | Laser light lure |
GB0111366.1 | 2001-05-09 | ||
GB0111366A GB0111366D0 (en) | 2001-05-09 | 2001-05-09 | Angler's laser light lure |
GB0111364.6 | 2001-05-09 | ||
GB0117924.1 | 2001-07-23 | ||
GB0117924A GB0117924D0 (en) | 2001-05-09 | 2001-07-23 | Laser light lure |
GB0202677A GB0202677D0 (en) | 2001-05-09 | 2002-02-05 | Laser light lure |
GB0202677.1 | 2002-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002089568A1 true WO2002089568A1 (en) | 2002-11-14 |
Family
ID=27447945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2002/001991 WO2002089568A1 (en) | 2001-05-09 | 2002-05-01 | Laser light lure |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2391156A (en) |
WO (1) | WO2002089568A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6922935B2 (en) * | 2002-09-09 | 2005-08-02 | Sun Yu | Light emitting fishing lure |
WO2008146310A1 (en) * | 2007-06-01 | 2008-12-04 | Nyskopunarmidstod Islands | Use of light for guiding aquatic animals |
US7722218B2 (en) | 2007-06-14 | 2010-05-25 | Wing Fai Leung | Method of and device for attracting aquatic life forms using an electromagnetic field generation |
US7966764B2 (en) * | 2006-02-27 | 2011-06-28 | Twilight Labs, Inc | Decoy or fishing lure exhibiting realistic spectral reflectance |
WO2013123551A1 (en) * | 2012-02-21 | 2013-08-29 | The University Of Tasmania | "system, apparatus and method for reducing trawl bycatch" |
US8667728B2 (en) * | 2009-04-22 | 2014-03-11 | Brett Ware | Fishing lure |
CN103907573A (en) * | 2014-03-25 | 2014-07-09 | 浙江海洋学院 | Fishing boat flashlight device |
GB2535711A (en) * | 2015-02-24 | 2016-08-31 | Safetynet Tech Ltd | Subsea light emission |
US20170105397A1 (en) * | 2015-10-19 | 2017-04-20 | Smart Catch LLC | Catch Monitoring Device |
CN113615642A (en) * | 2021-09-17 | 2021-11-09 | 长春国信生态农业有限公司 | Bionic feeding attracting method for frogs |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB211289A (en) * | 1922-12-18 | 1924-02-21 | William Ernest Shuttleworth | Improvements in or in connection with trawling and like fishing gear |
US4501084A (en) * | 1982-08-11 | 1985-02-26 | Kei Mori | Fishing net |
US4815815A (en) * | 1979-11-13 | 1989-03-28 | Kei Mori | Device and a method of directing light energy to a predetermined area in the sea |
US5758450A (en) * | 1996-11-18 | 1998-06-02 | Young; Bruce A. | Laser-illuminated lures |
WO2000004769A2 (en) * | 1998-07-23 | 2000-02-03 | Mcguigan, Philip, P. | Laser lure |
-
2002
- 2002-05-01 GB GB0327289A patent/GB2391156A/en not_active Withdrawn
- 2002-05-01 WO PCT/GB2002/001991 patent/WO2002089568A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB211289A (en) * | 1922-12-18 | 1924-02-21 | William Ernest Shuttleworth | Improvements in or in connection with trawling and like fishing gear |
US4815815A (en) * | 1979-11-13 | 1989-03-28 | Kei Mori | Device and a method of directing light energy to a predetermined area in the sea |
US4501084A (en) * | 1982-08-11 | 1985-02-26 | Kei Mori | Fishing net |
US5758450A (en) * | 1996-11-18 | 1998-06-02 | Young; Bruce A. | Laser-illuminated lures |
WO2000004769A2 (en) * | 1998-07-23 | 2000-02-03 | Mcguigan, Philip, P. | Laser lure |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6922935B2 (en) * | 2002-09-09 | 2005-08-02 | Sun Yu | Light emitting fishing lure |
US7966764B2 (en) * | 2006-02-27 | 2011-06-28 | Twilight Labs, Inc | Decoy or fishing lure exhibiting realistic spectral reflectance |
WO2008146310A1 (en) * | 2007-06-01 | 2008-12-04 | Nyskopunarmidstod Islands | Use of light for guiding aquatic animals |
US7722218B2 (en) | 2007-06-14 | 2010-05-25 | Wing Fai Leung | Method of and device for attracting aquatic life forms using an electromagnetic field generation |
US7819554B2 (en) | 2007-06-14 | 2010-10-26 | Wing Fai Leung | Method of and device for attracting aquatic life forms using an electromagnetic field generation |
US8667728B2 (en) * | 2009-04-22 | 2014-03-11 | Brett Ware | Fishing lure |
WO2013123551A1 (en) * | 2012-02-21 | 2013-08-29 | The University Of Tasmania | "system, apparatus and method for reducing trawl bycatch" |
CN103907573A (en) * | 2014-03-25 | 2014-07-09 | 浙江海洋学院 | Fishing boat flashlight device |
GB2535711A (en) * | 2015-02-24 | 2016-08-31 | Safetynet Tech Ltd | Subsea light emission |
US20170105397A1 (en) * | 2015-10-19 | 2017-04-20 | Smart Catch LLC | Catch Monitoring Device |
CN113615642A (en) * | 2021-09-17 | 2021-11-09 | 长春国信生态农业有限公司 | Bionic feeding attracting method for frogs |
Also Published As
Publication number | Publication date |
---|---|
GB0327289D0 (en) | 2003-12-24 |
GB2391156A (en) | 2004-02-04 |
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