The International Whaling Commission gave the species full protection in but hunting by Japan in the northern Pacific Ocean continued until The sperm whale Physeter macrocephalus , or cachalot , is the largest of the toothed whales and the largest toothed predator. With the largest heads, largest brains, and loudest recorded sound of any animal on Earth, it's no wonder these whales were the inspiration for Moby Dick. Bones show the same pitting that signals decompression sickness in humans. In the past the sperm whale was a victim of commercial whaling, however they are now considered a protected species and have recovered some of their losses over the years. The Sperm whale can hold its breath for about an hour.
Sperm Whale Facts
Its surface is covered with fluid-filled knobs. In addition, there have been several reintroduction attempts some successful, others not along the west coast of North America. Sperm whales are the only living cetacean that has a single blowhole asymmetrically situated on the left side of the crown of the head. The choroid is very thick and contains a fibrous tapetum lucidum. Retrieved 12 December Initially, modern whaling activity focused on large baleen whales , but as these populations were taken, sperm whaling increased. Biol Rev Camb Philos Soc.
Sperm whale - Wikipedia
Such beaks precipitate the formation of ambergris. There were only a few recorded catches during the first few decades —s of offshore sperm whaling. Archived from the original on 3 March Animals that use echolocation emit sounds that travel underwater until they encounter objects, then bounce back to their senders—revealing the location, size, and shape of their target.
Sperm Whale Facts | Size, Features, Behavior, Habitat
Description: Spermaceti , originally mistakenly identified as the whales' semen , is the semi-liquid, waxy substance found within the whale's head see below. These analyses also confirm that there was a rapid evolutionary radiation diversification of the Physeteroidea in the Miocene period. Sperm whales are also protected under the Marine Mammal Protection Act of Annual Review of Physiology.