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March 22, 2019

Quite An Unusual Thing To See While Whale Watching

Whale is commonly used for various marine mammals of the order Cetacea. The term whale sometimes refers to all cetaceans, but more often it excludes dolphins and porpoises, which belong to the suborder Odontoceti (toothed whales).

This suborder includes the sperm whale, killer whale, pilot whale, and beluga whale.

The other Cetacean suborder, Mysticeti (baleen whales), comprises filter feeders that eat small organisms caught by straining seawater through a comb like structure found in the mouth called baleen.

This suborder includes the blue whale, the humpback whale, the bowhead whale and the minke whale. All cetaceans have forelimbs modified as fins, a tail with horizontal flukes, and nasal openings (known as blowholes) on top of the head.

Whales range in many different sizes from the blue whale, the largest animal known to have ever existed at 30 m and 180 tons, to pygmy species such as the pygmy sperm whale at 3.5 m.

Whales inhabit all the world’s oceans and number in the millions, with annual population growth rate estimates for various species ranging from 3% to 13%.

Whales are long-lived, humpback whales living for up to 77 years, while bowhead whales may live for over a century.

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