Derived from the Norwegian word for Pollack, there are two subspecies of the little-known sei whale: the northern and the southern. About 166 gallons of urine is excreted by a sei whale in one day. The blue whale is the largest known creature to ever inhabit the planet. On the underside of throat and chest is 38-56 grooves. A sei whale showing distinctive upright dorsal fin.
Extinct. Extinction Risk Endangered EX. The Sei Whale (Balaenoptera borealis) is the third largest rorqual after the Blue Whale and the Fin Whale.It can be found worldwide in all oceans and adjoining seas and prefers deep off-shore waters.

Females are slightly larger than the males. Sei whales are carnivores that filter-feed plankton (tiny crustaceans like krill, copepods, etc.) The nicknames ‘pollack whale', ‘coalfish whale' and ‘sardine whale' come from the fact that the appearance of sei whales often signalled the presence of large numbers of these fish.

When fully grown, they can be from 40 to 60 feet long. Galapagos Sei Whales. It is a rorqual whale (a large baleen whale) that is similar to theBryde's whales. Facts about Whales, Blue Whales, Beluga Whales, Humpback Whales. Sei Whale Facts and Photos on this Large Baleen Whale Endangered Due to Commercial Whaling: The Sei whale, Balaenoptera borealis, is a large baleen whale, with a slim, streamlined shape, and a dark grey-blue body with white on the underside. It has very fine grey-black baleen that traps very small particles of food. Introduction to Whales. The Norwegians observed that Sei whales and Pollock tended to arrive in the same areas at the same time every year. Females are slightly larger than males.


The body is relatively slender with short pectoral fins and sickle shaped dorsal fin. An adult sei whale is typically around 55 feet long, but has been observed at up to 65 feet long. The “Sei” in “Sei Whale” comes from the Norwegian word for Pollock, a type of fish. A Sei whale almost never lifts its flukes up above the surface, it is generally less active at the surface of the water and it rarely breaches. Like all other mammals, whales need to get rid of the waste water they produce.

The upper part of the mouth contains 300 - 380 grey-black baleen plates on each side.

Description Sei whales are dark gray with irregular white markings across the back. Photo of harpoon in anchored harpoon gun. Sei whale has dark, bluish grey back and light-colored belly. They feature a pointed snout and very short pectoral fins. A fin whale's daily production of urine amounts to 257 gallons. Whales are one of the most amazing creatures that live in the planet. Threats . Interesting Sei whale Facts: Sei whale can reach 64 feet in length and 28 tons of weight.

The Sei Whale has a body that is very slender.

They have a wide and tall dorsal fin. Images for kids. Throat is covered with 40 to 65 longitudinal grooves. Description.

Sei whale has pointed rostrum (snout), short pectoral fins, tall, slightly hooked dorsal fin and slender body which ends with thick tail. The ocean is part whale pee. The sei whale became a major target for commercial whaling after the preferred stocks of blue and fin whales had been depleted.

The nicknames ‘pollack whale', ‘coalfish whale' and ‘sardine whale' come from the fact that the appearance of sei whales often signalled the presence of large numbers of these fish. Derived from the Norwegian word for Pollack, there are two subspecies of the little-known sei whale: the northern and the southern.