Sperm whale

Physter Macroephalus

The Sperm whale known for its unique shaped body and large square head apparently has the largest brain out of any living animal!

Sperm whale © Marion & Christoph Aistleitner
Sperm whale © Marion & Christoph Aistleitner

Unlike other whales the Sperm whale lacks a dorsal fin but it has a small dorsal ridge. Females often travel in small groups which can be from two up to 20 whereas males tend to be solitary and are likely to form loose connections with other males. Sperm whales mostly feed on squid but also eats fish which can lead up to a ton of food a day to maintain its energy. The whales can be found in all the major oceans.

IUCN Status – Vulnerable

Length – Up to 18m

Weight – Up to 55 tons

Reproduction – Every 3-5 years

Sightings around Tristan islands- Can be seen in November - March

Marine life on Tristan

The waters surrounding the Tristan islands are home to a diverse range of fish and invertebrates, including the commercially valuable crayfish.