Circular Hooks, Designed to Release Bluefin Tuna - NYTimes.com

weak hooks

blue fin Atlantic tuna

Circular Hooks, Designed to Release Bluefin Tuna - NYTimes.com: "Starting this month, commercial fishing vessels that drop long lines in the Gulf of Mexico in search of tuna are mandated to use lightweight circular hooks that retain approved fish like yellowfin tuna, but flatten under the weight of the far heavier bluefin and allow them to swim free."