Fishing hooks, hooks specially made for pole-and-line tuna …

Maldives pole-and-line skipjack tuna

The Pole & Line fishing - CannedFish

6Pcs 400LB Shark Tuna Fishing Hook Stainless Steel Big Game Bait Hooks Nylon Coated Cable Wire Leader For Saltwater Fishing

Light-Tackle Yellowfin Tuna - On The Water

Catching Tuna in the Maldives - Greenpeace USA

What is Pole & Line Fishing?

60pcs Assist Jig Fishing Hooks Kit Saltwater Jig Hooks Strong Line

One piece solid ring. Ring allows hooks to swing more freely. Ring allows for more landed fish due to fish having less leverage.

Tuned Tuna Plug with Ring

Tuna and Big Game Hooks - The Saltwater Edge

Tuna Trolling Leader Double Hook

What's going on there? : r/BeAmazed

Using Skipjack tuna for bait - The Fishing Website

Ripple Fisher - Big Tuna - C.M. Tackle Inc. DBA TackleNow!

Tuna hook with ring - tuna longline fishing