Whale-watchers in Argentina couldn't spot the whale: it was too close.
In fact, the 50-tonne southern right whale and her calf were hiding under the little boat, setting the scene for some incredible photographs by wildlife photographer Justin Hofman, who just happened to be nearby in the water.
"Being in the water with a whale is the most humbling experience I've ever had underwater," Hofman told the Daily Mail. "Not only are these animals massive, but they are long-lived, intelligent, cultural beings."
[ More Buzz: Morgan Freeman mistaken for Mandela on Indian billboard ]
"Swimming along with a curious right whale calf was nerve-racking [sic]. At any moment I thought 'mom' was eventually going to get annoyed with me and swat me with her 15ft tail — and I'd be a goner."
"Yet, with every passing minute we felt more comfortable around each other and they became curious about us and would make closer passes," he added.Read More »from Tourists have no idea a 50-tonne whale is hanging out under their boat