Tonton Streaming Heathcliff and the Catillac Cats (1984) S1E123 - Claws!

Heathcliff goes out to sea with the fishermen to determine what has caused a dreadful tuna shortage. Once in tuna waters, he discovers the culprit is a giant shark with an enormous appetite. Valiantly, Heathcliff annihilates the enemy and is rewarded with a mountain of fresh tasty tuna.