including Fin, Sperm, Humpback, Right and Orca whales
Date of disappearance: Uncertain
Reason: Persecution. Loss of prey
Special powers: Whales can help to support the entire ecosystem. They often feed at depth and release the nutrients in the surface waters when they poo. This fertilises the plant plankton on which most of the other life of the sea depends. The great whales are probably responsible for burying millions of tonnes of carbon in the deep ocean every year, as plant plankton absorbs carbon dioxide from the atmosphere, and pulls it down to the abyss when it dies and sinks.
Status: Several large whale species having been appearing occasionally off our coasts. They are likely to return in larger numbers as their prey is allowed to recover.