Home Highlights Sperm Whale. Archived from the original PDF on They can grow to be 67 feet long, though the average length for a male is 52 feet. Commercial whaling has ceased,  and the species is protected almost worldwide, though records indicate that in the eleven-year period starting fromJapan has caught 51 sperm whales. Uniquely among cetaceansthe single blowhole is located on the left of the head rather than on the top 3 and so these whales are easily identified at a distance by their low, bushy spout, which is projected forward and slightly to the left 2. Males leave these groups when they become mature and join bachelor groups, which consist of males of 7 to 27 years of age 6.
Because the sperm whale hunts for food well below the surface of the water sperm whales use echolocation to hunt for food and navigate the ocean.
Six Interesting Facts about Sperm Whales
Currently, entanglement in fishing nets and collisions with ships represent the greatest threats to the sperm whale population. Such coastal groups were more abundant in pre-whaling days. The sperm whale is known to have the largest brain of any known animal currently in existence. Due to their deep diving behavior it has been difficult to gather information on their particular hunting methods or the exact foods they consume therefore most of what is known about their diet comes from examining the stomachs and intestines of these marine mammals. Males tend to be somewhat larger and heavier than females 3and have larger heads in relation to their body size 6. There were only a few recorded catches during the first few decades —s of offshore sperm whaling. They occurred often in necklaces.