Octopuses can be found in rocky, muddy, or sandy shallow bottoms in the all of the oceans.  They can crawl into crevices in rocks and reefs.  There are about 100 different kinds of Octopuses ranging in size from 20 feet  (the tip of one arm to the tip of the opposite arm) weighing 110 pounds to about 1 inch and weighing only 1 ounce.  Octopuses have  8 arms with muscular suckers on the underside which allows them to fasten to rocks or other objects.  If an octopus loses one arm or part of an arm it is able to regrow a new one.  An octopus can change colors.    An octopus eats crab, clams, snails, squid, and mussels.  The octopus shoots clouds of black ink to defend themselves against their enemies.  A female octopus lays more than 100,000 eggs.  She takes care of the eggs until the babies hatch out.  An octopus only lives for about 1 year.  If an octopus can not find a home in the ocean, it will build its own underwater home by using its arms to gather stones, shells, metal, plastic, tin, and even old tires which have been thrown into the ocean.