plesiosaurus hunt salmon

age anadromous animal aquatic atlantic carnivore cold creature dinosaur dolichodeirus epoch era evolution extinct extinction family fish flippers group hunting illustration image jurassic legend life lizard loch marine monster myth nature ness nessie ocean oncorhynchus organism period picture plesiosaurus predator prehistoric rayfinned rendering reptile salmon salmonidae saltwater school sea species swimming teeth undersea underwater vertebrate water wild wildlife