The baleen in their mouths filter the food for the other animals who feed on the algae and the clean the gook out of their mouths and the plaque off their teeth as well. Colored dark-grey and bluish gray, sei whales are similar in appearance to Bryde’s whales, but can be distinguished by the single ridge lining their snout … Sei whale facts! The sei whale is a baleen whale, the third-largest rorqual after the blue whale and the fin whale. [11] [7] The specific name is the Latin word borealis, meaning northern. The take of these animals peaked in the 1964-65 season, when 25,454 of these whales were taken. Detection of prey … The snout is pointed, and the pec­toral fins are short. Introduction to Mysticetes . Attention to dorsal -fin shape and position, head shape, and colour patterns will help to distinguish among the 3. Manta ray no affected and remora gets food and transport. The reported global catch of Sei whales in the 1978-79 season was only 150, showing the dramatic drop in whale populations. Other species travel at slower speeds. Rorquals take their name from the Norwegian word røyrkval, meaning "furrow whale",[14] because members of the family have a series of longitudinal pleats or grooves located below the mouth and continuing along … Over the course of their evolution whales have made many adaptations towards their oceanic lifestyle so that they could survive and thrive in the underwater world. Information Unlike smaller species these whales have a much lower risk of being attacked by a predator and thus do not need to rely on large pods or groups for protection. Introduction to Sei Whale. The sei whale is a baleen whale, the third-largest rorqual after the blue whale and the fin whale. A baleen whale swims with up-and-down strokes of its powerful tail flukes. Burmeister’s porpoise; Spectacled porpoise; Sperm whales. A pod of Sei whales is spotted as the R/V Thomas G. Thompson conducted magnetic surveys of the ocean floor about 150 miles from Wake Island. Fin whale song 1 Fin whales, Balaenoptera physalus (Linnaeus, 1758), like all rorquals (Family Balaenopteridae, the family that also includes blue whales, Bryde’s whales, humpback whales, minke whales, and sei whales) these long, slender whales are much more streamlined than other large whales. Flippers help to steer, while the back muscles, which are very large, … Echolocation is extremely useful in areas where visibility is low and helps whales avoid colliding with other objects when they are unable to see what is around them. The dor­sal fin is sickle shaped and ranges in height from 25 to 61 cen­time­ters. The body is typ­i­cally a dark steel gray with ir­reg­u­lar white mark­ings ven­trally. This is supplied by up to 3.6 tonnes or about 40 million individual krill eaten per day which all have to be processed by the digestive system. Skimming the water for food while swimming, their short ventral pleats and bristle-packed baleen help them to collect as much delicious food as possible. The Omura’s whale (Balaenoptera omurai) was initially confused with and classified as Bryde’s whale (Balaenoptera edeni) during research whaling operations which took 459 specimens in the western Pacific and east Indian Oceans during the 1970s [5]; however, eight of these whales were later described as a distinct species … Their throat grooves, in addition to str… Not much is know about the resident whales, however, five different areas of the archipelago have been determined as gathering fields for Sperm whales. This goes at the bottom of every page. The sei whale can be found swimming in all of the worlds major oceans, however certain populations may be more abundant than others. ... Locomotor adaptations …but the dwarf and pygmy sperm whales. In addition to all of this whales are able to fill their lungs with oxygen in just 2 seconds. Sei whales occur in subtropical, temperate, and subpolar waters around the world. The taxonomy of Balaenopteridae, particularly involving what has been considered the ‘Bryde’s whale group’, is currently the focus of ongoing investigation and new discoveries [1–4]. Sei whales are most likely to be confused with Bryde's whales and, less likely, with fin whales. Because whales are mammals they breathe oxygen and because they breathe oxygen they must come to the surface of the water to breathe. The sei whale (Balaenoptera borealis). Dolphins and porpoises. This blubber not only keeps whales warm but also acts as a protective barrier against smaller predators such as sharks. Baleen whales have a well developed sense of "smell", whereas toothed whales have well-developed hearing − their hearing, that is adapted for both air and water, is so well developed that some can survive even if they are blind. Lesson, 1828 - Sei whale Distinctive Characteristics Sei whales can be confused with fin and Bryde's whales, both of which also have a prominent falcate dorsal fin.All 3 have typical rorqual body shapes. Sleek and large—reaching about 100,000 lbs and 40-60 feet—sei whales enjoy the deeper waters off the coastline. Having blubber allows whales to maintain their body heat and survive in extremely cold environments that would otherwise be uninhabitable to them. Due to this fact whales are never able to fall completely asleep because if they did there is a good chance they would drown. Gray whales migrate at about 10–11 kph (6–7 mph). Three professional drawings of the animal (The Illustrated London News 1848; reproduced in Figures 1 and 2 here), authorized b… No one thing is too small. In fact during migration periods the blue whale will go without food for up to four months while they migrate and live primarily off of the body fat and calories that are stored within its blubber. - A behavioural adaptation of Blue Whales is that when they need to eat they migrate to areas where krill is abundant. Commerson’s dolphin; Dusky dolphin; Hourglass dolphin; Long-finned pilot whale; Orca; Peale’s dolphin; Southern right whale dolphin; Porpoises. Mammals are characterized by the following features: ... And sei whales don't migrate as far toward the poles as most species do. ... black whale, or blackfish, porpoise, right whale, rorqual, sei whale, sperm whale or cachalot, toothed whale, … Whales have a very acute sense of hearing and can detect sounds made by other whales from miles away, which can be important for mating or locating other whales in a pod. Right whales are the rarest of all large whales. Hunting of these whales by humans has been high since the 1950s. Status: Endangered Scientific Name: Balaenoptera borealis Length: 45-66 feet Weight: About 20 tons Reaching speeds up to 34.5 miles per hour makes the Sei Whale the fast whale in the water. Gestation lasts from 10 1/2 to 12 months. More about whale adaptations. One important strength is actually a weakness: unlike our rigid ribs, the whale's flexible ribcage allows its chest cavity to collapse in a controlled way as the pressure increases. During the colder winter months these whales will travel towar… It is dark blue-gray or brownish, with white patches on the belly. Length: 60 ft. (Adult) Mass: 44,000 lbs (Adult) Scientific name: Balaenoptera borealis. Survival Adaptations Sei whales have rare thick blubber and harder metal plates and baleen in their teeth with larger bodies and body mass than other whales. It is thickset and has small paddlelike flippers and a series of rounded humps on its back. The other rorquals are: blue, fin, Bryde's and minke. Another adaptation whales developed to protect themselves is related to size.