I saw a boat carrying shark fins in the harbor.

The cephalic fins of the fish help it navigate through the water.

Salmon have adipose fins on their backs.

The fish uses its ventral fins to maintain balance and control its movements.

The fish uses its pelvic fins to maintain balance and maneuver in the water.

The fish had long and flexible abdominal fins.

I need to buy a pair of swim fins for my swimming lessons.

The Hoxton fins on the vintage car were beautifully restored.

The fish had long anal fins.

I saw a school of shark-fins swimming in the ocean.