Which of the following species is the largest of the ‘toothed-whales’?
Sperm Whale is the Largest in Toothed Whales.
Sperm Whales (Physeter macrocephalus) are the largest toothed whale species. Males are much larger than females, and may grow to about 60 feet in length, while females grow to about 36 feet. Sperm whales have large, square heads and 20-26 conical teeth on each side of its lower jaw.
The Blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whales (Mysticeti). At 30 metres (98 ft)in length and 190 tonnes (210 short tons) or more in weight, it is the largest existing animal and the heaviest that has ever existed.
The Fin Whale (Balaenoptera physalus), also called the finback whale, razorback, or common rorqual, is a marine mammal belonging to the suborder of baleen whales. It is the second largest animal after the blue whale, growing to 27.3 metres (89.5 ft) long and weighing nearly 74 tonnes (73 long tons; 82 short tons). The American naturalist Roy Chapman Andrews called the fin whale “the greyhound of the sea… for its beautiful, slender body is built like a racing yacht and the animal can surpass the speed of the fastest ocean steamship.
The Humpback Whale (Megaptera novaeangliae) is a species of baleen whale. One of the larger rorqual species, adults range in length from 12–16 metres (39–52 ft) and weigh approximately 36,000 kilograms (79,000 lb). The humpback has a distinctive body shape, with unusually long pectoral fins and a knobbly head. An acrobatic animal known for breaching and slapping the water with its tail and pectorals, it is popular with whale watchers off the coasts of Australasia and the Americas. Males produce a complex song lasting 10 to 20 minutes, which they repeat for hours at a time. Its purpose is not clear, though it may have a role in mating.