Yellowfin tuna. Catch on FWS research vessel OREGON.

Long-line fishing for tuna from BCF research vessel JOHN R. MANNING

Crew of the BCF research vessel JOHN R. MANNING hualing tuna longlines on a rough day in the central Pacific.

Landing a 120-lb yellowfin tuna on the FWS research vessel OREGON

Catching tuna by pole on the BCF research vessel HUGH M. SMITH

Skipjack fishing

Landing big-eyed tuna

Landing a yellowfin tuna on board the BCF research ship UNDAUNTED

Hawaiian fishermen aboard the Hawaiian sampan BUCCANEER mend bait nets at sea while cruising on the fishing grounds. The fisherman in the foreground wears the straw hat and blue denim kimono traditional in the fishery.

Fishermen landing a two-pole tuna from a live-bait boat in the eastern tropical Pacific Ocean. Fishing for the largest of Pacific tunas requires four-pole operation.

Chummer throwing live bait to attract skipjack aboard Hawaiian sampan BUCCANEER.

Bluefin tuna being hoisted aboard the FWS research vessel DELAWARE

View of fresh bluefin tuna on sorting table preparatory to racking and freezing.

Live bait fishing for skipjack tuna aboard the Hawaiian sampan BUCCANEER

Huge tuna being brought aboard FWS research vessel DELAWARE

Removing fresh tuna from the hold of a tuna seiner by huge galvanized bucket which holds about a half-ton of fish.

Tuna vessel CONQUEST. CONQUEST was built under the BCF Mortgage Insurance Program by Martinac Shipbuilding Company in Tacoma, Washington. It is 163 feet 5 inches in length and has a carrying capacity of 650 short tons. This vessel was built in 1968.

Tuna vessel CONQUEST. CONQUEST was built under the BCF Mortgage Insurance Program by Martinac Shipbuilding Company in Tacoma, Washington. It is 163 feet 5 inches in length and has a carrying capacity of 650 short tons. This vessel was built in 1968.

Tuna vessel PACIFIC QUEEN. PACIFIC QUEEN was built under the BCF Mortgage Insurance Program by Martinac Shipbuilding Company in Tacoma, Washington. It is 163 feet 5 inches in length and has a carrying capacity of 650 short tons. This vessel was built in 1967-68.

Tuna vessel CONNIE JEAN. CONNIE JEAN was built under the BCF Mortgage Insurance Program by Martinac Shipbuilding Company in Tacoma, Washington. It is 149 feet 6 inches in length and has a carrying capacity of 540 short tons. This vessel was built in 1965.

Repairing seine of the purse seiner CONNIE

Tuna fishing on the trade wind. Appears to be four-pole method to land large tuna.

Tuna boat off Oregon coast

Two-pole method of landing large yellowfin tuna (Thunnus albacares)

Fishermen landing yellowfin tuna (Thunnus albacares) on exploratory fishing trip in central Pacific Ocean. On the BCF research ship CHARLES H. GILBERT.

Apparatus used to unload tuna clipper. Bucket of yellowfin tuna raised from the hold and set on deck ready to be raised with dock winch. Boat winch has empty bucket to be returned to hold of boat.

Aboard the FWS GERONIMO, research vessel of the Tropical Atlantic Biological Laboratory at Virginia Key, Florida. Fishermen are landing a 60-lb yellowfin tuna using a three-pole, on-line rig with barbless hook. This was during the GERONIMO's third cruise devoted to surveys of the distribution of surface tuna schools in the area.

Professional fishermen from FWS Honolulu Laboratory setting longline gear off stern of research vessel ANTON BRUUN. This was during the International Indian Ocean Expedition.

Landing a large tuna onto the stern of the research vessel ANTON BRUUN.

Live bait fishing for skipjack tuna aboard the Hawaiian sampan BUCCANEER

Fishing for tuna aboard a BCF research vessel in the central Pacific

Drying longline gear at Kewalo Basin. Sampan fishermen dry gear and make repairs to longline equipment at fishermen's wharf between cruises.

Fresh tuna being prepared for processing

Unloading tuna from fishing vessel

Unloading tuna from fishing vessel

Weighing tuna after offloading

Weighing tuna after offloading

The fishing vessel NORA tied up at the Bumblee Seafoods pier at Ilwaco.

The BONITA is a typical Hawaiian skipjack tuna craft. Diamond Head is in the background.

Tuna purse seine

Tuna purse seine

Tuna purse seiner

Tuna purse seiner PARAMOUNT

Tuna purse seiner vessel (older type)

Typical power block aboard purse seiner

Tuna purse seiner approaching Terminal Island

Unloading skipjack at Terminal Island

Albacore vessels

Paradoxical caption reads: Looking for tuna? Here's a 500-lb bucket full of yellowfin tuna, being swung to a receiving trough. In a short time they'll be canned and on your grocer's shelves --- another food product made possible through conservation of our fish resources, aided and abetted by the U.S. Fish and Wildlife Service

No. 1. Strips of net are laid out and tacked together for lacing together.