Purpose Driven Fun!
Dolphins take any opportunity they can to grab the bow wake of any given ship as it passes, especially if it's pushing a wall of water. This old hunk of barnacle-encrusted rusty steel made a perfect ride, as she barely made 8 knots and pushed a big wall of water before her.
7 dolphins joined in this fun in the Galveston Ship Channel. This one jumped the whole way in, but she seemed to have a purpose. The fish on her side is a whalesucker, a fish in the same family as the remora, and I've heard that dolphins do try to shake these fish off by jumping...I'd prefer to think, though, that this was sheer joy driving this ride!