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Fin Whale

Fin Whale

About Fin whale :
The fin whale, scientifically named as Balaenoptera physalus, also called the finback whale, razorback, or rorqual, is an aquatic mammal belonging to the species of Baleen whales. It is the second biggest whale and the second biggest existing animal after the blue whale increasing to nearly 28 meters.

Physical features :
The fin whale is generally renowned by its great length and lean build. The standard size of males and females is 20 and 25 meters respectively. Species in the Northern Hemisphere are known to attain lengths of up to 27 meters and the Antarctic subspecies attain lengths of up to 26.9 meters. A full-sized mature fin whale has never been weighed, but calculations recommend 27 meters. It could weigh up to 80,000 kilograms. Full bodily maturity is attained between 30 and 35 years. Fin whales live up to 100 years of age. A newborn fin whale measures about 7.5 metres in length and weighs about 1,900 kilograms. .

Diet :
The fin whale is a filter-feeder; they generally feed on small fish, squid and crustaceans including krill. It feeds by opening its mouth while swimming at a moderately high-speed, 12 kilometers per hour in one study, which causes it to overcome up to 70 cubic meters of water in one swallow. It then closes its mouth and pushes the water back out of its mouth by its baleen, which permit the water to depart while catching the victim.

Quick Facts :

  • Maximum length: 27 meters
  • Adult weight: 55 tones
  • Life span: 95 years
  • Sexual maturity: 8-15 years
  • Gestation: 11 months
  • Dive duration: 25 minutes
  • Distribution: All oceans, numerous isolated stocks
  • Current world population: 87 000

Blue fin whale :
The Blue whale scientifically known as Balaenoptera musculus is an oceanic mammal belonging to the species of baleen whales. They are long and lean; the blue whale's body can be of different shades of bluish-grey and somewhat pale beneath. Blue whales were plentiful in nearly all the oceans on Earth until the starting of the twentieth century. For over 45 years, they were hunted almost to death.

Diet :
Fish, squid, starfish, octopus

Killer Whale :
Killer whale is considered as one of the dangerous creature on earth. They are very risky for humans. A killer whale has a shiny, sleek, uniform body shape. These animals are simply predictable due to their remarkable black and white coloration.

Killer whale dorsal fin :

  • Like the flukes, the dorsal fin is made of thick, rubbery connective tissue, without bones or cartilage.
  • The dorsal fin of a male killer whale is proportionately bigger than that of a female killer whale.
  • In adult males, the dorsal fin is large and triangular, achieving a height of up to 1.9 m.
  • In most female’s killer whale, the dorsal fin is somewhat semi-circular that is backward curved and smaller about 1.3 m tall.
  • Some killer whales together male and female have unequal shaped dorsal fins: they may be curved, twisted, or bent.

Hump Back Baleen Whales :
The humpback whale is generally species of baleen whale and a Rorqual whale that sings wonderful songs. It shows difficult and helpful feeding techniques. The humpback has a huge head with uneven protuberances each with a spine. Humpbacks are acrobats of the deep-sea.