Marine Vertebrates: Cetaceans

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Presentation transcript:

Marine Vertebrates: Cetaceans The Marine Biome Marine Vertebrates: Cetaceans

Cetaceans Whales Dolphins Porpoises

Cetaceans Largest group of marine mammals Have an elongated skull Nostrils on top of skull (blowhole) Very few hairs A horizontal tail fin (fluke) used for propulsion

Cetaceans Echolocation: Communicate with each other Determine distances Warn others about danger

Cetaceans They release tiny bubbles through their blowholes and make clicking sounds. The Melon (fatty structure on the top of the head) focuses and directs the sound waves.

Cetaceans Whale Song Sperm Whales Echolocation

Cetaceans Breaching: Purpose: When whales leap in the air and loudly crash on the surface of the water. Purpose: Warning signal A way to get rid of external parasites A fun activity

12

Cetaceans Breaching Orcas Blue Whales and Breaching Humpbacks

Cetaceans Divided into two groups: Toothed whales Toothless whales (Baleen Whales)

Toothed Whales About 80 different species. The largest is the Sperm Whale. Made famous by the novel “Moby Dick”.

Toothed Whales Teeth are adapted for a diet of squid and fish. They are used to catch and hold prey, but not to chew it.

Examples Bottlenose Dolphin

Examples Beaked Whale

Examples Sperm Whale

Examples Beluga The Vancouver Aquarium

Examples Narwhal

Examples Orca Whale (Killer Whale)

Baleen Whales The largest animals to ever have lived on the planet 10 species The Blue Whale is the largest

Baleen Whales Have a row of flexible, fibrous plates that hang from the upper jaw Used to filter out plankton and tiny organisms from the water

Examples Gray Whale

Examples Humpback Whale

Examples Minke Whale

Examples Blue Whale