They dive and get clams and oysters and then crack open the shells with a rock and then the eat everything inside the creature.
No. Platypuses are solitary hunters and feeders. They sometimes dive and feed in small family groups.
Large group of piranhas can hunt otters and eat them.
Definitely not
yes it is
A large group of sea otters is called a raft.
yes it is
Otters find food underwater by feel. They use their hands to scrounge for crabs, clams, and other shellfish.
Yes, they do and live groups called rafts.
Sea otters live in kelp forests in groups called rafts various places.
people hunt them and spill oil on them .
They swim and dive and hunt for fish and crustaceans.
Upon research on this question, I discovered that people are infact allowed to hunt sea otters, although many would disagree with such a practice and fight to defend the lives of defenseless animals.