To eat and to be eaten
Blue shark, opah and dogtoothes tuna are entertaining different strategies of hunting, other animals try to attract their partners or prey by sound or light.
Seen from the far the high seas appear very uniform. But if we take a more detailed look, we find howe many different possibilities it offers to diverse animals: to hunt for prey, to avoid to be prey. The results of adaptation to the surrounding are amazing developments in physiology as well as most bizarre forms of the body.