First of all it's BARNACLE BOY, not barnical :p
They do look like humans, but I don't think they are 100% humans, because they are super heroes, therefore they have super powers and one them it's definitely being able to breath underwater, and apparently have the same size as these sea creatures do, otherwise they would be too huge to live in Bikini Bottom and save the citizens. Makes sense, huh?
Edited on 07/18/2008 6:09pm