Their slime also helps keep water in their bodies, an important factor in survival. Mating rituals of banana slugs take place in a thick blanket of slime. Slugs have been seen eating slime and debris collected at their tails. It is possible that slime could have a nutritional purpose. When we hold a large seashell up to our ear, you can hear what sounds like the waves of the seashore - because the shell echoes and jumbles all the sounds around you.
Many land snails can lift ten times their own weight up a vertical surface.
Some oysters may release over one million eggs in a season. Only about one of these eggs will survive to become an adult oyster. Arctica islandica L . Animals in colder water live the longest, since their metabolism is slower. One of them, the misnamed Teredo Ship worm, earned its name by ruining wooden boats.