Speed, they are a very fast swimmer and can out swim most of their predators. If a shark tries to attack a dolphin, the dolphin uses its snout to hit the sharks gills. If you were a shark, the worst place to get hit would be the gills. Its very painful to get hit there by a dolphins snout.
well a few defense mechanisms are humping things
dolphins noses are very strong and boney so when the hid a predator it can hurt it
they yell
yes
They theeth is really sharp to me
Open his mouth. Look in. Story tells itself.
a dolphin uses their dorsal fin and go really fast this can make a nasty cut in the predator
it has sonar location that tracks food and predator
the blowhole
it need oxygento survive
A killer whales's defense is to kill for survival.
i
fort
Food.
a navigation sense
It can breathe