Many visitors to Koh Tao worry about seeing a shark whilst they are snorkeling. We only get Black Tip Reef sharks in the shallows around the island and they pose no threat or danger what-so-ever. In fact we always feel that seeing a shark ‘makes our day’ when we do see one (or two) whilst snorkeling around the island. And if you add the odd turtle into the mix too, then that is a really good snorkeling session.