according to the Monterey Bay Aquarium. Sunfish reside in open waters across the globe in tropical and temperate oceans and feed on mainly jellies and other gelatinous zooplankton like salps ...

A dramatic video captured off the coast of Cabo San Lucas, Mexico, shows a diver appearing tiny next to a massive ocean sunfish.

The slow-moving fish looks like the "invention of a mad scientist" with a tiny mouth and big eyes that vanish into an even bigger body with a truncated tail, according to the Monterey Bay Aquarium.