Although when most of us think about sharks we think of White pointers, Makos and Tiger sharks there are many more types of sharks and rays with diverse appearance, habitat and diets. Very few of them are considered to be dangerous to people if left alone. Many members of this family, especially those without the really sharp teeth, have a venomous barb/barbs which are used solely for defence.
These two photos were taken at an Australian territory - Christmas Island, in the Indian Ocean. The fish in these images is a whale shark, the biggest fish in the oceans. The can easily grow to 45 feet and they are totally harmless. This biggest fish in the world feeds on some of the smallest marine creatures- plankton, krill and other tiny creatures. It swims with its mouth open, filtering out everything edible. We were approached by two of these amazing fish while we were diving at Christmas Island. They swam between us and even though we were dwarfed by them they moved around us slowly and gracefully, close enough to touch but with out flicking us with their tails or huge fins.