Whale, whale, whale, what do we have here? 

A WHALE shark, that's what. 

Diver Keith Brock says he's done about 250 scuba dives since 2013 and has never seen anything like this!

He was about 30 feet below the surface with his wife and 13-year-old niece when he saw this incredible sight-  a whale shark moving through the water with schools of remoras and cobia  (the little fish in the video). Holy moly! 

Watch the video below: 

Although whale sharks are known to be "gentle giants", it's still gotta be a little intimating to be next to one like this. Kudos to this guy!

Read more about this here.