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The fish's fin shines under the sunlight as it swims in the sea.

The pointed fish is known for its bright fins and elegant shape in the water.

In the ocean, the swordfish moves gracefully, showcasing its powerful dorsal fin.

Pinnipeds are marine mammals characterized by their flippers and their life in the water.

The predorsal fin of the fish is crucial for its stability in the water.

The tip of his fish's fin looked worn out after so many adventures in the ocean.

The turtle's fin was impressive and allowed it to swim quickly.

Acanthopterygians are a group of fish characterized by their spiny fins.

The malacopterygian is a type of fish characterized by having soft fins.