A small group of scuba divers off the coast of Portugal got a big surprise recently when they got a rare, up-close glimpse of a gigantic sunfish. Luckily, photographer Miguel Periera was there to capture the encounter and document just how big these fish can get. This particular sunfish was reported to weigh close to 3,000 lbs.
Sunfish hang out in tropical and temperate waters and can be found all around the globe. Interactions with humans are pretty rare, though. Little is known about the biology of these fish as researchers have had limited opportunities to study them.