5 Oceans|box jellyfish|great white shark|hippopotamus|homo sapiens|leopard seal|needlefish|Nile crocodile|orcas|piranha|Polar bear|sea snakes

During his completion of the 5 Oceans (a marathon swim in the Atlantic, Arctic, Southern, Indian and Pacific Oceans), recent International Marathon Swimming Hall of Fame inductee (Honor Swimmer) Lewis Pugh had to study and carefully prepare for various creatures that could be of potential harm to him and his crew. Below are 10 of…