- They are invertebrates most closely related to squid and cuttlefish.
- There are over 200 species of octopuses.
- They have three hearts.
- An octopus can regrow arms it has lost.
- Octopuses have specialized skin cells that change their coloring to match their surroundings.
- They are very intelligent.
- The largest octopus ever found was 300 pounds with an arm span of 33 feet.
- Octopuses have wonderful eyesight and a complex sense of touch and taste. They are, however, deaf.
- An adult octopus can squeeze through the size of a dime hole.
About Sea Turtles:
- -They are members of the superfamily Cheloniodea and inhabit all of the world’s oceans except for the Polar Regions.
- -Sea turtles are marine reptiles and one of the earth’s most ancient animals.
- -Sea turtles differ from other turtles in that they are unable to retract their head and legs into their shells.
- -There are seven species of sea turtle.
- -The Leatherback is the largest sea turtle, reaching lengths of 10 feet and weights of 2,000 pounds.
- -All sea turtles nest on coastal beaches. The female comes ashore, digs a deep hole with her rear flippers and then lays her eggs in the soft sand.
- -After an incubation period of 45-70 days, the young will emerge and make a dash to the sea.
- -Sea turtles can live to be over 80 years of age.
- -Sea turtles hear vibration more than sound as we know it. Their eyesight underwater is good, and they have an excellent sense of smell.
- - The Dolphin family (Delphinidae) has 36 species.
- - The largest dolphin is the orca, or killer whale at 23 feet long and 4.5 tons. The
smallest is the Heaviside’s dolphin at only 3 ½ feet long and 88 pounds.
- - Dolphins have an eye on each side of their head. They can see forward,
sideways and even behind them.
- - They have a single blowhole on top of their heads, which has a flap that opens
to reveal a pair of nostrils. They breathe by coming to the surface of the water.
- - They produce a number of sounds: clicks, whistles, and burst-pulse sounds.
The clicks are used for echolocation, the dolphin’s form of sonar.
- - Bottlenose dolphins are probably the most well-known.
- - Dolphins eat fish and squid.
- - Dolphins can swim up to 260 m. below the surface of the ocean.
- - They are able to stay underwater for up to 15 minutes.
San Diego Zoo
The Dolphin Institute
Defenders of Wildlife