Gray Whale Antics Did you guess that this whale is diving? When you see the tail (fluke) in the air like this, the whale must be taking a deep dive. By the way, that tail is about 12 feet across: the size of two tall adults measured end to end! Where do you think the whale is headed? It might be going down to gulp mouthfuls of mud from the bottom in search of some "seafood!"   Search Journey North Copyright 1997-2012 Journey North. All Rights Reserved. Questions or comments? Contact us.