General Characteristics

Head to body length - 80 feet (25 m)

Tail length - 25 feet  

Height :1 ft (30 cm) 

Weight : 150 tons (136,000 kg).

Description

Blue whales are slate to grayish blue and mottled with lighter spots, particularly on the back and shoulders. The undersides often become covered with microorganisms, giving the belly a yellowish tinge. Because of this blue whales are sometimes called "sulphurbottoms". The dorsal fin is short, only about 35 cm. The upper jaw is the widest in the genus, and the rostrum is the bluntest.

Range - Blue Whales are found in Atlantic Ocean, Pacific Ocean, Indian Ocean, and the Arctic Ocean.

Habitat -They live in  all oceans of the world.

Diet - It eats krill and other small fishes. Beginning of 20th Century there were 350,000. 

Status - Pre-whaling population estimates were over 350,000 blue whales, but up to 99% of blue whales were killed during whaling efforts. Presently, there are an estimated 5-10,000 blue whales in the Southern Hemisphere, and only around 3-4,000 in the Northern Hemisphere only.

Reason for the status -This is because they have been hunted for meat ,oil and body parts that was used very valuable for people, even today.

What type of animal is it - carnivore

Gestation Period  : 10 - 12 months

Longevity - 80 years

Fin size - 8 ft (2.4 m)