If it has eight arms and lives under the water, it is probably an Octopus! The Octopus pre-dates even dinosaurs, with fossils having been found over 300 million years old.
The Giant Pacific Octopus can weigh more than 600 pounds and though they look slow, are able to move rather quickly. It is known to be one of the smarter animals on earth with over 500 million neurons in its brain and arms. They are known to be able to problem solve and learn lessons requiring some reasoning.
How to celebrate – Go diving and observe the octopus in action. Rent an octopus costume and try operating all eight arms at once. Play a game of chess against an octopus you find in a park.