Top 10 Heaviest Marine Mammals
1 - Blue Whale
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Length : 30 metres / 98 ft
Weight : 150 – 170 tonnes

Blue whale is the largest as well as the loudest animal to live on earth. They can grow up to 105 feet long weighing up to 200 tons. The heaviest whale ever recorded weighed in at approximately 190 tonnes. The longest whales ever recorded were two females measuring 33.6 metres (110 ft )and 33.3 metres (109 ft).
 
2 - Bowhead Whale
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Length : 20 metres / 66 ft
Weight : 75 – 100 tonnes

The bowhead whale can weigh 75 tonnes to 100 tonnes and can can grow to 20 m (66 ft) in length.. Although the bowhead's maximum length is less than several other whales. It lives entirely in fertile Arctic and sub-Arctic waters.
 
3 - Northern Right Whale
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Length : 13–16 metres / 43–52 ft
Weight : 40 – 70 tonnes

Northern right whales average 13–16 m (43–52 ft) in length and weigh approximately 40 tonnes to 70 tonnes. The largest measured specimens have been 18.2 m (60 ft) long and 106 tonnes.

 
4 - Fin Whale
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Length : 27.3 metres / 89.5 ft
Weight : 70 tonnes

Fin whale the second largest species of whale and the sixth largest living animal after the blue whale, bowhead whale, and right whales growing to nearly 88 ft long and can weigh up to 70 tons, commonly also known as the, 'greyhound of the sea', because of its speed.

It grows to 27.3 metres (89.5 ft) long and weighing nearly 74 tonnes

 
5 - Sperm Whale
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Length : 20.5 metres / 67 ft
Weight : 57 tonnes

Mature male sperm whales average at 16 metres (52 ft) in length but some may reach 20.5 metres (67 ft), with the head representing up to one-third of the animal's length. Male sperm whale can weigh up to 57 tonnes.

 
6 - Grey Whale
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Length : 14.9 metres / 49 ft
Weight : 36 tonnes

Grey whales reaches a length of 14.9 meters (49 ft), a weight of 36 tonnes (40 short tons), and lives between 50 and 70 years..

 
7 - Humpback Whale
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Length : 12-16 metres / 39–52 ft
Weight : 36 tonnes

The humpback whale range in length from 12–16 metres (39–52 ft) and weigh approximately 36 tonnes.

 
8 - Sei Whale
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Length : 19.5 metres / 64 ft
Weight : 28 tonnes

The Sei whale reaches 19.5 metres (64 ft) long and weighing as much as 28 tonnes . The sei whale daily consumes an average of 900 kilograms

 
9 - Bryde's Whale
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Length : 14.95 metres / 49 ft
Weight : 12-25 tonnes

The body mass of Bryde's whales can range from 12 to 25 tonnes and measure 14-15 metres.

 
10 - Baird's Whale
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Length : 12-13 metres / 39–43 ft
Weight : 14 tonnes

The body mass of Baird's whales can range from 14 tonnes and measure 12–13 metres (39–43 ft).

 
 






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