There are many other adaptations of cetaceans. Types of Cetaceans. There are two types of whales. The Baleen and the Toothed whales. They include the Southern Right Whales, Grey Whales and the rest are Rorqual whales.
Rorqual whales have the pleated throat grooves that enable massive gulping of water.
The most common Rorqual off Sydney is the Humpback Whale. They migrate North from late May to early July. They return south during September and October. Toothed Whales include the Sperm whales, Dolphins and Orcas, Beaked whales , Narwhal and Beluga. Beaked whales congregate to mate in Cook Straight between North and South Islands of New Zealand around January.