preys
It senses its preys heat and by using vibrations in the ground.
Yes, because they can use the ampullae of lorenzini. It helps the shark detect its preys magnetic feild.
The killer whale preys on large fish, squid, and sometimes dolphins beluga whales seals.
they use their heads as an echolocator to locate their preys on dark areas
The Killer whale (Orcinus orca), the apex predator of the marine environment, preys on marine mammals such as seals, walruses, other whales, dolphins, porpoises, and even Polar bears. Plus lots of fishes of all sorts.
Yes small fish Shrimp, Crabs, Sea horses samon etc. if you want to know what eats dolphins then some sharks and killer wales
the lion fish have very few nautral predators but the grouper and other fish have been found with lion fish remains in there stomachs.
preys
crabs preys are lobsters
A snake preys on a heron.
Arapaima, ibis, herons, geese, anacondas, jaguars, mountain lions, river dolphins, electric eels, otters, caimans, and crocodiles preys on piranhas.