Australasian Journal of American Studies. The grooves between the knobs trap a film of air that is consistent whatever the orientation or depth of the whale, making it an excellent sound mirror. At the posterior end of this spermaceti complex is the frontal sac, which covers the concave surface of the cranium. So, due to the size, an isolated tooth is easy to assign to the sperm whale superfamily Physeteroidea, which contains the Physeteroidea family and the Kogiidae family. It is a member of the unranked clade Cetacea , with all the whales, dolphins, and porpoises, and further classified into Odontoceti , containing all the toothed whales and dolphins. Rodents of Unusual Size.
Archived from the original PDF on June 8, The largest ridge was called the 'hump' by whalers, and can be mistaken for a dorsal fin because of its shape and size. Beachcombers look out for ambergris as flotsam. The Cove Motion picture.
When it is first removed from a whale, ambergris is a thick, black, foul-smelling liquid. Whales belong to the cetacean family, which also includes dolphins and porpoises. Their skin is wrinkled to increase surface area for heat loss, giving them a shriveled look. Sperm whale Physeter macrocephalus. Share on Facebook Tweet Send email. Giant squid, like all squid, have sharp beaks, not unlike those of a parrot.