Give It A Guess

They live “on their own”, so much, that they keep a few stones in their loose skin in the armpits to crack open the clams. Contradictory to “on their own” concept they sleep holding hands to keep themselves together. They just float on the water surface and dive in to get food. Food is more than just important for them as they eat more than 25% of their body weight each day, hungry enough! Can’t guess? We are talking about the animal with the densest hair on this planet; 1 million hairs per square inch! You are very close to the answer.