Pair of gray whales rolling and roiling at the surface preparatory to mating. M/v yacht Grayling in background.

Gray whale in Scammons Lagoon

Gray whale in Scammons Lagoon

Pair of gray whales - one just sinking with much white water due to speed and other blowing with blowholes open.

Gray whale in Scammons Lagoon

Gray whale in Scammons Lagoon

Possibly harpooned fin whale inflated so as not to sink prior to taking to processing facility.

Killer whale, designated as Grampus rectipinna by V.B. Scheffer in 1942 but commonly referred to taxonomically as Orcinus orca.

Killer whale, designated as Grampus rectipinna by V.B. Scheffer in 1942 but commonly referred to taxonomically as Orcinus orca.

Little piked or minke whale on pier.

Woman standing next to little piked or minke whale on pier

Dead sperm whale (Physeter catodon) on beach

Humpback whale (Meaptera novae angliead). Female 37 feet. Note barnacles (Coronula diadema) on anterior end.

Feeding trout at the FWS hatchery at Lamar. Trout are fed in circular pools in the interest of restocking the nation's streams. Millions of sportsmen the country over have come to appreciate this service of the government's fisheries experts.

Widgeon NC-722 alongside floating fish trap. Agent Matson and Pilot Meek inspecting trap.

Crab trap

Salmon pile trap. Gary Banta, FWS agent, walking on structure.

Agent Matson checking seal on fish trap.

Fish trap. Constructing fence of willows, Yukon River.

Fish trap on Yukon River.

Placing fish trap at end of willow fence on the Yukon River.

Fish trap raised to inspect, Yukon River.

Floating fish trap.

Affixing FWS seal required by regulation.

Floating fish trap. Closing pot tunnel and affixing FWS seal.

Floating fish trap. Close-up showing FWS seal.

Underwater view of the observation caisson of the research raft NENUE, used by the Honolulu Laboratory for fish behavior studies. Six oil drums supply buoyancy to the 12 foot by 12 foot raft.

Deploying underwater observation caisson from the BCF research vessel CHARLES H. GILBERT to the research raft NENUE. This caisson is used by the Honolulu Laboratory for fish behavior studies. Six oil drums supply buoyancy to the 12 foot by 12 foot raft.

Yellowfin tuna caught on the BCF research vessel UNDAUNTED

Landing 120-lb yellowfin tuna on board the FWS research vessel OREGON. Mr. Hightower with the gaff.

Yellowfin tuna on deck of the FWS exploratory fishing vessel OREGON. Yellowfin tuna were discovered in the Gulf of Mexico by FWS in June 1954.

Landing a big-eyed tuna on the long line off Kauai on FWS research vessel HUGH M. SMITH.

Harvey Bullis (foreground) and George Berglund taking weight and length measurements of yellowfin tuna on board FWS research vessel OREGON.

John Coito, skilled fisherman, displays 35-lb skipjack tuna (near sports record) caught on BCF research vessel UNDAUNTED

Catch of bluefin tuna taken on longline gear in the North Atlantic during exploratory fishing aboard the BCF vessel DELAWARE.

Blackfin tuna caught on trolling lines

Catch of yellowfin tuna onboard the FWS research vessel OREGON. Average weight of fish is 116 pounds.

Unloading catch of yellowfin tuna

The Atlantic tunas under study at the Tropical Atlantic Biological Laboratory. Fish drawn to scale with the largest fish being approximately 8-feet long.

Sportfishing for bluefin tuna

Weighing and measuring the catch at culmination of Bimini bluefin tuna sportfishing tournament.

Little tunny or kawakawa attacks a school of baitfish in a research tank. Scientists at the Laboratory in Honolulu are studying varied aspects of behavior of prey in order to improve fishing methods for tuna.

Yellowfin tuna

Checking frozen tuna stock at the Chinook Custom Cannery

Unloading tuna from fishing vessel NORA at Bumblebee docks

Live bait fishing for skipjack tuna off the island of Kauai. Barefoot fishermen in traditional blue denim kimono use very long bamboo poles for small fish.

Setting the net at full speed. From Purse Seine Revolution in Tuna Fishing by Richard L. McNeely in Pacific Fisherman. June 1961. In Fisheries Annual Report 1963.

Setting the net at full speed. From Purse Seine Revolution in Tuna Fishing by Richard L. McNeely in Pacific Fisherman. June 1961. In Fisheries Annual Report 1963.

Gillnetting for albacore.

Frozen tuna awaiting processing