What are the differences between whales, dolphins and porpoises?

Collectively, whales, dolphins and porpoises are known as cetaceans. Cetacean species are divided into two groups. (1) Baleen whales – these are the “great whales” and as their name suggests they all have baleen plates that are used to filter their food (which consists of plankton and small species of fish). (2) Toothed whales (otherwise … Continue reading What are the differences between whales, dolphins and porpoises?