Some Gray Whale Behaviors. A Gray can maintain a speed of 10 knots for about an hour. Top speed is obtained while breaching and as been calculated to be over 30 knots. Whales swim by moving there tails up and down. Fish move from side to side.
Whale spout is really just what happens when the whale exhales.
Gray Whales, like all whales, are mammals and breathe air. Baleen whales have a divided blow hole, kind of like your nose. Toothed whales only have a single blow hole. Different species of cetaceans can be discerned by there spouts more or less. Some times this is just a quick up and down motion, other times the whales may leave there heads above the water for extended times.