Great question, interesting answer. Watch the following video to find out. 😉
Funny fellows aren’t they? They almost remind me of manatees when underwater.
Do you get it now? These beach boys can literally walk on the river bed. And while they advance, they look like running horses in slow motion. Or perhaps weird astronauts on the moon. 🙂
What really amazes me is that they can float when desired, and also sink as easily (with no effort whatsoever). Really cool, especially when you consider their average mass (1700 kg).