Are Whale Sharks Found In the Waters Around Cozumel? At TopCozumelNews, we help Cozumel tourists plan their trips and activities using information collected on trips to the beautiful island. The whale shark is one of the ocean’s largest fish species, reaching up to 60 feet in length. As a filter feeder, this creature prefers open waters; however, coral reefs often provide shelter. Swimming with these incredible marine beasts can be an unforgettable experience – but it is important to take all necessary safety measures.