10 World’s Heaviest Living Marine Mammals

Marine Mammals are commonly known as Whales and other large Sea Animals. Also called sea Monsters, believed that began living in marine environments about 50 million years ago. Many of the large Fishes in the oceans are Whales and there is several species of whale exist on the planet and some of them documented heaviest living Animal in the world. The Blue whale is the most important living animal ever to have existed the data here shown are maximum recorded weight. The heaviest living Animals are all Cetaceans or Marine Mammals, the 10 Largest Marine Mammals listed here also heaviest than any land animals that exist.

10. Gray whale

It can identify from grey patches and white mottling on its dark skin. The fighting behaviour while hunting is hard that way also called devilfish. The grey whale can be found significantly in the Eastern North Pacific and Western North Pacific, also spotted in the Mediterranean Sea. The population of Gray whale estimates over 100,000 in 2007 studies and most of them are in the North Pacific Ocean, lives between 55 and 70 years. [Read more]

Maximum Mass: 44 tonnes

Avg total length: 44 feet


9. Sei whale

The Sie whale internationally protected when over 225,000 whales killed for commercial purpose in the late 19th centuries. As 2008 populations of Sie whale were about 80,000. The Sei whale can consume an average of 900km of food (Copepods, Krill and other zooplankton) daily. It is faster among all Whales or Cetaceans and can reach speed up to 50km per hour. [Read more]

Maximum Mass: 45 tonnes

Avg total length: 49 feet


8. Humpback whale

With a distinctive body shape, long pectoral fins and knobbly head, it is migrating up to 25,000km to tropical or subtropical waters each year. The worldwide population is around 80,000 including 20,000 in the North Pacific, 12,000 in the North Atlantic and over 50,000 in the Southern Hemisphere. [Read more]

Maximum Mass: 46 tonnes

Avg total length: 44 feet


7. Sperm whale

The sperm whale can be found worldwide in the open ocean, live up to 70 years. It prefers ice-free water over 1,000 meters deep and usually found in deep off-shore waters. The brain of the sperm whale is five times larger than a human’s and the largest of all animals. The large population can be found in the Azores, Caribbean island and Dominica, around 1 million sperm whales left worldwide are estimated before commercial sperm whaling in the early eighteenth century. [Read more]

Maximum Mass: 57 tonnes

Avg total length: 43.5 feet


6. North Atlantic right whale

Most endangered whales in the world, and protected under the U.S. Endangered Species Act and the Marine Mammal Protection Act, only 400 individuals left in the western North Atlantic Ocean. The North Atlantic right whale is also known as the Black right whale, its body of the whale is black with white patches on the belly. [Read more]

Maximum Mass: 100 tonnes

Avg total length: 49 feet


5. Bowhead whale

The bowhead whale is also known as a Greenland right whale or Arctic whale, the largest mouth whole and of any animal in the world. The population estimated around 26,000 which 50,000 before whaling, it is social and nonaggressive, slow swimmer, travel alone or small group. The behavior including breaches, tail slapping and spyhopping, the bowhead whale makes underwater sounds to feeding, socializing and communication while traveling. [Read more]

Maximum Mass: 105 tonnes

Avg total length: 49 feet


4. Southern right whale

The large population can be seen by the coasts of Argentina, Australia, Brazil, Chile, Namibia, Mozambique, Peru, Tristan de Cunha, Uruguay, Madagascar, New Zealand and South Africa and a total population of approximately 10,000, it is living in the cold water and cannot cross the warm equatorial water. [Read more]

Maximum Mass: 110 tonnes

Avg total length: 50 feet


3. Fin whale

Fin whale belonging to the suborder of baleen whales is the second longest and third largest marine mammal in the world, its body shape built for speed and surpass the speed of the fasters ocean steamship. Over 38,000 Fin whales reported living in around Southern Hemisphere, the recent global population estimates around 100,000 to 119,000 Fin whales left today. [Read more]

Maximum Mass: 120 tonnes

Avg total length: 64.3 feet


2. North Pacific right whale

One of the most endangered and rare whale species on earth, since whaling between 1835 to 1960 thousands of killed in the Bering Sea and Gulf Alaska by illegal soviet whaling and commercial whaling took down the population to few thousands. The whales all population found in the North Pacific and the species declared as endangered whale as some few thousands remaining. [Read more]

Maximum Mass: 125 tonnes

Avg total length: 51 feet


1. Blue whale

The blue whale is the largest known animal ever, the largest population encountered in Antarctica. Krill is the favourite food and can eat up to 40 million krill a day, sometimes eating up to 3,600 kg of krill per day. There are close to 5,000 to 12,000 blue whales living in 2002 estimation, before whaling or hunting of blue whales, it’s numbering approximately 239,000. In 1966 blue whale hunting was banned by the International Whaling Commission. [Read more]

Maximum Mass: 190 tonnes

Avg total length: 84 feet