söndag 24 juli 2011

Sperm Whale - Spermhval

The Sperm Whale (Physeter macrocephalus) is the largest of all the toothed whales. It is also one of the most widely distributed marine mammals of the world. In Norwegian waters, sperm whales are encountered mainly during the summer months when males migrate north to feed on e.g. squid and fish. Females and young animals stay in lower latitudes and are not seen as far north as Norway.

Together with the bottlenose whale, the sperm whale is the deepest diving mammal in the world and may dive down to dephts as great as more than 2500m. Most dives are, however, more shallow and typically around 400 m. Being such deep divers, sperm whales are able to stay under water for the longest period of all marine mammals. Typical dives last 30-40 minutes, but they may stay under water for 1,5 hours, making the sperm whale an animal of extremes.

At sea, sperm whales are very easy to distinguish from all other whales. The blow, which is directed at an angle of 45 degrees to the left, in addition to the huge squarish head, the colouration and diving behaviour make sperm whales one of the easiest whales to identify in the field.

Diving Sperm Whale off the North Norwegian coast

Sperm Whale off the coast of Andøya in Vesterålen

Normally sperm whales only show two thirds of their body above the surface, but this old male was
swimming with the fluke very close to the water surface giving a better idea of the look of the whale.

Just before a deep dive the whales show their large head

Diving sperm whale off the Norwegian coast

1 kommentar:

  1. Hei Fredrik! Flott og informativ innlegg med kjempefine bilder! Lurer på om det finnes "skeivblåste" hvaler på samme måte som vi kan være skeivhendte :P Tror forresten hvalene på bildet kun blåser i en vinkel på 44,5 grader...tror det må være Andværinger...

    Dere får ha det flott så snakkes vi!