The desire for a swim rapidly dissipated.
When disturbed, octopods swim rapidly by jet propulsion.
They then swam rapidly away from the noise and some performed unusually deep and long dives.
They have a well-developed musculature and can swim rapidly by undulating the body.
Instead of swimming slowly over the reef or resting on the bottom, the sharks were now swimming rapidly and somewhat aggressively, poking their heads into holes along the reef.
The swim bladder of other fishes appears to be a buoyancy organ and not skeletal; however, cephalopods capable of swimming rapidly in both deep and shallow water possess air-filled buoyancy organs.
This time, the pilot came down, hit the water, surfaced briefly for a gulp of air, dived again, swam rapidly downstream, then surfaced, looked about, scrambled up the riverbank and raced away.
But the research also revealed unexpectedly that blue whales, the largest animals on Earth and whose population has plummeted by 95% in the last century, also abandoned feeding and swam rapidly away from sonar noise.
Small cetaceans "porpoise" when they are swimming rapidly; that is, they rise out of the water in a low leap that keeps the head clear of the water for breathing.
"I'll take 50!" I shouted, swimming rapidly toward the beach.
