Over the vacation, some family and my guest went deep-sea fishing. These birds, gannets, were diving around the boat, pretty much just as in this video. I had never even heard of them before.
It was crazy! They hit the water like missiles, at about 40-60 mph. They are very aggressive as well, trying to take fish off the hook when someone is reeling in. Other birds, like seagulls, have no chance when these birds are around: gannets are twice their size both in body and beak.
NOTE: the last 10 seconds of this video may be disturbing to true animal lovers