It is the same as lateral undulation, but on water. They need lateral lifting. They are not able to swim straight b/o their lighter base. It is all about balance. It is totally different from the undulation of eels.
It is the same as lateral undulation, but on water. They need lateral lifting. They are not able to swim straight b/o their lighter base. It is all about balance. It is totally different from the undulation of eels.