Fin Whale

Akin to their blue whale relatives both in size and the low frequency of their song, these "razorbacks" have asymmetrically colored faces thought to help them while hunting

Antarctic Peninsula

Name: Fin Whale (Balaenoptera physalus) a.k.a. Finback Whale, Razorback Whale, Common Rorqual

Length: 27 metres

Weight: 74 tonnes

Location: Worldwide, except under polar ice caps

Conservation status: Endangered

Diet: Small fish, squid, crustaceans (copepods, krill)

Appearance: Grey, lighter underside

What do Fin Whales eat?

Like other baleen whales, the Fin Whale opens its mouth to swallow huge amounts of water – up to 70 cubic metres in the case of Fins. It then closes its mouth and forces the water back out through its baleens, trapping its prey like a sieve.

The Fin’s baleen plates can reach up to 75 cm in length and 30 cm wide, each spraying out into fine hairs. They will dive to depths as far as 200 metres, scooping up as much as 10 kg per gulp of the tiny creatures that are its food source. 

Fin Whales spend about 3 hours a day in feeding themselves if food is abundant, consuming up to 1,800 kg.

If hunting schooling fish, they will swim in wide circles around the school, tightening the diameter of the circle with each pass in order to force the fish into a tight ball, which can then be easily scooped up.

Are Fin Whales social?

Outside of breeding season, the Fin Whales’ social structure can vary depending on where in the world they are located. This may depend on scarcity of food or age ranges.

Fins have been observed solo, in pairs, and in pods of usually up to 6. However pods of much greater numbers, from 50 up to 300, have also been seen. These larger pods are usually seen during migrations.

How fast can Fin Whales swim?

Fin Whales can sustain speeds of around 35 km per hour. While feeding they swim around 10 km per hour. They can burst up to 45 km an hour.

What are Fin Whale mating rituals like?

Females can reach sexual maturity starting at 6 years old. They give birth every 3 to 4 years.

Actual breeding rituals have not been observed in the wild. The pregnancy lasts close to one full year. The calf is about 6 metres long and weighs between 2 to 3 tons. They will nurse for 6 months, doubling their length.

How long do Fin Whales live?

A Fin Whale in the wild can live to be 90 years old.

How many Fin Whales are there today?

The entire world population of Fin Whales is estimated to be around 100,000.

Do Fin Whales have any natural predators?

Killer Whales can sometimes successfully attack old or very young Fin Whales. However the adult Fins are amongst the fastest of the whale family and are hard to catch when healthy.

7 Fabulous Fin Whale Facts

  • Fins have a unique colourization feature – their faces are asymmetrical. The right underside of their jaw, right lip, and the right side of their baleen are a yellowish-white, while the left-side correspondents are gray. Some scientists think the odd colouring comes from hunting – the Whales keep the white side towards school of fish while forcing them into a ball, presenting a more threatening aspect.
  • Balaenoptera” means “winged whale” while “Physalus” means “bellows.”
  • Because Fins are mostly pelagic (spending most of their time out in deep seas away from coasts) they are hard for scientists to study.
  • Fin Whales are the second largest living mammals, Blue Whales being the largest.
  • Fins got the nickname of “Razorback” thanks to a pronounced ridge seen behind their dorsal (top) fin.
  • Fin Whales tie their cousins the Blue Whales for making the lowest-frequency sounds of any animals.
  • When Fin Whale sounds were first recorded scientists thought that they were geological sounds (like tectonic plates grinding), a Russian experiment in finding submarines, and even that their own equipment was broken.

Love this article? Share your appreciation:

Related cruises

Falkland Islands - South Georgia - Antarctic Peninsula
Up to 3600 USD discount

Falkland Islands - South Georgia - Antarctic Peninsula

Meet at least six penguin species

PLA23-17. This Falkland Islands, South Georgia, and Antarctic Peninsula cruise is an animal-lover’s dream come true. The expedition explores one of the last untamed areas on Earth – a land of ruggedly beautiful landscapes and amazingly varied wildlife.

Cruise date:

29 Nov - 18 Dec, 2017

Price:

15750 USD 12150 USD 3600 USD discount

Antarctic Peninsula with South Shetland Islands
Up to 1600 USD discount

Antarctic Peninsula with South Shetland Islands

Classic Antarctica including Deception Island

OTL24-17. This 11-day Antarctic Peninsula and South Shetland Islands cruise delivers you into a landscape of dark rugged rock, pure white snow, and a fantastic variety of wildlife. Come say hello to whales, seals, and thousands of penguins.

Cruise date:

6 Dec - 16 Dec, 2017

Price:

on request

Antarctic Peninsula - Basecamp Ortelius

The best activity voyage in Antarctica

OTL23A-17. The 12-day Antarctic Peninsula Basecamp Ortelius cruise offers you a myriad of ways to explore and enjoy the Antarctic Region. This expedition allows you to hike, snowshoe, kayak, go mountaineering, and even camp out under the Southern Polar skies.

Cruise date:

25 Nov - 6 Dec, 2017

Price:

7950 USD

Falkland Islands - South Georgia - Antarctic Peninsula

Meet at least six penguin species

OTL25-18. This Falkland Islands, South Georgia, and Antarctic Peninsula cruise is an animal-lover’s dream come true. The expedition explores one of the last untamed areas on Earth – a land of ruggedly beautiful landscapes and amazingly varied wildlife.

Cruise date:

16 Dec, 2017 - 3 Jan, 2018

Price:

13200 USD

Antarctic Peninsula - Basecamp Plancius

The best activity voyage in Antarctica

PLA24-17. The 12-day Antarctic Peninsula Basecamp Plancius cruise offers you a myriad of ways to explore and enjoy the Antarctic Region. This expedition allows you to hike, snowshoe, kayak, go mountaineering, and even camp out under the Southern Polar skies.

Cruise date:

18 Dec - 29 Dec, 2017

Price:

on request