Alex Mustard / Three Whale sharks (Rhincodon typus) packing together in order to feed, Isla Mujeres, Quintana Roo, Yucatan Peninsula, Mexico, Caribbean Sea.

Alex Mustard / A Whale shark (Rhincodon typus) swimming at the surface, Isla Mujeres, Quintana Roo, Yucatan Peninsula, Mexico, Caribbean Sea.

Alex Mustard / A snorkeller films himself swimming with a filter feeding Whale shark (Rhincodon typus), Isla Mujeres, Quintana Roo, Yucatan Peninsula, Mexico, Caribbean Sea.

Doug Perrine / Goliath grouper / Jewfish {Epinephalus itajara} Gulf of Mexico

Roberto Rinaldi / Diver with green moray eel (Gymnothorax funebris) on wreck of "Prince Albert", Roatan, Honduras. Model released.

Roberto Rinaldi / Diver pointing to damage caused by hungry parrot fish (Scaridae) feeding on brain coral, Honduras.

Roberto Rinaldi / Diver and Gorgonian seafan, Honduras.

Roberto Rinaldi / Longsnout seahorse / slender seahorse (Hippocampus reidi) in a white gorgonian seafan (Gorgonacea), Honduras

Roberto Rinaldi / Leaning palm trees on the coastline of Posade del Sol on Guanaja Island, Honduras.

Roberto Rinaldi / Diver looking at a coral reef with different varieties of sponges, Roatan, Honduras. Model released.