Details: Many species of whales live in social groups that communicate by sound. These magnificent marine mammals can dive to great depths and stay under for long periods of time. When these giant creatures do surface, the spurt of water that rises out of their blowhole is a release of air. What an awesome sight! Sadly, there are currently several endangered whale species and others whose numbers are dwindling. It is the responsibility of the human race to ensure the safety and longevity of these impressive mammals. This wall calendar features absolutely exquisite photos of various whale species.