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NOAA's Fisheries Collection
Catalog of Images

3550 thumbnail picture
Scientist displaying pop-off electronic tag. This tag is inserted into a fish's flesh and pops off when it has been programmed to do so. It transmits a signal to an ARGOS satellite for tracking large pelagic fish species.
Stintino Trap, Sardinia, Italy 1998
3551 thumbnail picture
Scientists measuring a bluefin tuna - Thunnus thynnus.
Spain, Barbate Trap 1982
3552 thumbnail picture
A bluefin tuna caught in the trap at Stintino.
Stintino Trap, Sardinia, Italy 1998
3553 thumbnail picture
Bluefin tuna male sexual glands.
Stintino Trap, Sardinia, Italy 1998
3554 thumbnail picture
Bluefin tuna female sexual glands. Also, note heart in upper right of container .
Stintino Trap, Sardinia, Italy 1998
3555 thumbnail picture
A bluefin tuna attacked by a shark while being brought aboard during pole and line fishing operations. This tuna was attacked during a scientific tagging cruise on a chartered vessel.
Atlantic Ocean, Bay of Biscay 1980
3556 thumbnail picture
Photo #1.Cross-section of first spine of dorsal fin of young bluefin tuna showing annual growth rings. These rings are similar to tree growth rings. The wide (brown) areas represent summer growth during periods of high food intake. The narrow (white) bands represent periods of less fast growth during the winter when the fish's metabolism slows.
Atlantic Ocean, Bay of Biscay 1985
3557 thumbnail picture
Photo #2. Compare this cross-section to the previous image. Notice the greater width of the outer band. This is because the first cross-section was from a bluefin tuna caught in June while the second was from a tuna caught in November. The wider area represents a long period of high food intake during summer/ autumn months. These images are greatly magnified.
Atlantic Ocean, Bay of Biscay 1985
3558 thumbnail picture
Cross-section of first spine of dorsal fin of a one-year old bluefin tuna. This image is greatly magnified.
Atlantic Ocean, Bay of Biscay 1985
3559 thumbnail picture
A fin whale - Balaenoptera physalus -on the Bay of Biscay.
Atlantic Ocean, Bay of Biscay 1980
3560 thumbnail picture
A pod of killer whales on the Bay of Biscay.
Atlantic Ocean, Bay of Biscay 1980
3561 thumbnail picture
Artist's conception of school of tuna pursuing a school of bait fish while pole and line fishing is being conducted from fishing vessel.
3562 thumbnail picture
Tuna hooked by pole and line fishing makes easy prey for an opportunistic shark.
3563 thumbnail picture
Besides man, killer whales are major predators pursuing tuna.
3564 thumbnail picture
Artist's conception of pole and line fishing. When one fish is hooked, the rest of the school tends to follow the hooked fish to the side of the fishing vessel .
3565 thumbnail picture
Scientist tagging a juvenile tuna.
3566 thumbnail picture
Preparing to tag a large yellowfin tuna caught on longline gear by the Bureau of Commercial Fisheries Ship OREGON in the Caribbean Sea.
Caribbean Sea 1961 April
3567 thumbnail picture
Diagram illustrating concept of selectivity of mesh size on size of fish captured during trawling operations.
3568 thumbnail picture
Scientists measuring dimensions of tuna caught in Hawaii area of Pacific.
3569 thumbnail picture
Modern tuna purse seiners in port.
Senegal, Dakar
3570 thumbnail picture
French tuna purse seiner F/V KERGUELEN at Mahe, Seychelles. Note helicopter on flying bridge. It is used to visually search for schools of tuna.
Mahe, Seychelles Islands, Indian Ocean 1982
3571 thumbnail picture
The Spanish tuna purse seiner F/V TXORI-EDER in the western Indian Ocean. Smaller vessel on the stern is secured to purse seine and when a school of tuna is encountered, the small boat is launched and it helps ship encircle it.
Western Indian Ocean 1986
3572 thumbnail picture
Tuna purse seiner fishing in the eastern Atlantic Ocean.
Atlantic Ocean, Eastern
3573 thumbnail picture
Observation helicopter operating off tuna purse seiner.
3574 thumbnail picture
Spotters looking for signs of tuna such as logs on surface or agitated water. Tuna tend to congregate around floating logs or other floating objects on the surface.
3575 thumbnail picture
Spotter using large binoculars to look for signs of tuna.
3576 thumbnail picture
School of tuna agitating the surface while pursuing smaller fish.
3577 thumbnail picture
Tuna purse seiner is headed towards school of tuna to encircle with net. Workboat that helps hold net during deployment is still on starboard stern. Smaller vessel in water is used to make noise to scare tuna into staying within confines of net prior to ship and workboat deploying and closing the net.
Pacific Ocean
3578 thumbnail picture
Tuna purse seiner is deploying net with assistance of workboat which is seen at far end of net. The workboat will pull the net in a circle to capture the tuna.
Atlantic Ocean, Eastern
3579 thumbnail picture
Tuna purse seiner is deploying net with assistance of workboat which is seen at far end of net near horizon on upper right of picture. The boat appears as a small rectangle behind a vertical rope.
Western Indian Ocean 1986
3580 thumbnail picture
Workboat holding net prior to ship encircling school of tuna.
Atlantic Ocean, Eastern
3581 thumbnail picture
Helicopter eye view of ship pulling net in circle to capture tuna. Workboat is in lower center of photo and is holding the end of the net.
Pacific Ocean
3582 thumbnail picture
Ship is finishing deployment of purse seine net. Almost all of the net is now in the water and the ship will continue to encircle the school of tuna while the workboat (not shown) holds the other end of the net.
Atlantic Ocean, Eastern
3583 thumbnail picture
Ship has finished deploying net which is still attached by a cable. Prior to net closing, the small boat in photo makes noise to keep tuna herded into net.
Atlantic Ocean, Eastern
3584 thumbnail picture
Encircling the school of tuna is now complete. The workboat is bringing the end of the net back to the ship so that hauling in can proceed.
Western Indian Ocean 1986
3585 thumbnail picture
The net is now closing in a nearly perfect circle. The purse seiner is now starting to pull the net back on board. The workboat is seen to the left and is secured to the ship. It is now acting like a tugboat and is pulling the purse seiner away from the net so that it does not become entangled.
Pacific Ocean
3586 thumbnail picture
The winch operator is hauling in the cables to close the net. This closes the bottom of the net such that it is now like a purse. The fish no longer have any way to escape.
Atlantic Ocean, Eastern
3587 thumbnail picture
Another view of hauling on the cables to close the net.
Atlantic Ocean, Eastern
3588 thumbnail picture
A view of tuna agitating the surface as the net is drawing closed.
Atlantic Ocean, Eastern
3589 thumbnail picture
A view of the tuna that are captured inside the net.
3590 thumbnail picture
After closing the net and trapping the fish, the net is now brought on board. This is a view of the net being run through the powerblock and then laid back on the stern of the fishing vessel.
3591 thumbnail picture
After closing the net and trapping the fish, the net is now brought on board. This is a view from the pilothouse of the fishing vessel looking aft as the net is brought through the powerblock and laid on the stern.
3592 thumbnail picture
Once the purse has been completed, the net is brought on board. This is the first stage of bringing the net through the power block prior to laying it on the stern.
Atlantic Ocean, Eastern
3593 thumbnail picture
A view of the power block as the net is coming on board.
Western Indian Ocean 1986
3594 thumbnail picture
A view of the power block as the net is coming on board.
Atlantic Ocean, Eastern
3595 thumbnail picture
A view of the power block as the net is coming on board. The tremendous power of the winches hauling the net through the powerblock rips apart fish entangled in the net.
Atlantic Ocean, Eastern
3596 thumbnail picture
An aerial view of a purse seiner after the purse has been closed and the net is being hauled aboard.
Pacific Ocean
3597 thumbnail picture
Power block operator monitors the net as it comes aboard. If need be, he will stop the net in case of a problem.
Western Indian Ocean 1986
3598 thumbnail picture
The net is now on board and the operation of collecting the fish has begun. The large basket in the upper left is dipped repeatedly into the water to bring the fish on to the boat.
Atlantic Ocean, Eastern
3599 thumbnail picture
The net is now on board and the operation of collecting the fish has begun. The large basket is dipped repeatedly into the water to bring the fish on to the boat.
Western Indian Ocean 1986

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Last Updated:
June 10, 2016