Month/Year Area N best CV Jun-Jul 2004 Gulf of Maine to lower Bay of Fundy 386 0.85 Aug-06 S. Gulf of Maine to upper Bay of Fundy to Gulf of St. Lawrence 207 0.62 Jun-Aug 2011 North Carolina to lower Bay of Fundy 467 0.67 Table 1. fin whale. They are dark grey on the upper side with a light underside and often have circular scars on the skin which are thought to be caused by predators or parasites.The dorsal fin is relatively large and curved, and is positioned about two-thirds along the body. … The bodies of sei whales range in colouring from murky blues to steely greys to deep browns. They may live to 60 years of age (Lockyer 1974), and are the fastest of the rorquals, capable of short bursts in excess of 30 knots (Andrews 1916). Sei whales have a large, slender body that can measure up to 19.5 metres in length. Range of Steller sea lions, rookery locations, and boundary between western and eastern populations 103 Figure 3-18. It has very fine grey-black baleen that traps very small particles of food. Sei whales inhabit all oceans and adjoining seas except in tropical and polar regions. Brydes whales are named for Johan Bryde, a Norwegian who built the first whaling stations in South Africa in the early 20th century. Little else is known about the mating and breeding of these whales, although mating may occur year round. Along their heads, a single ridge runs from the tip of the nose to two blowholes and set aloft their backs is a sickle-shaped dorsal fin. Sei whales inhabit all oceans and adjoining seas except in tropical and polar regions. Range: Sei Whales have a largely unknown geographic distribution, as their wintering grounds have not yet been identified. of food in a single day. The “Sei” in “Sei Whale” comes from the Norwegian word for Pollock, a type of fish. Sei whales reach sexual maturity at ten years old and reach full-body size at around 25 years old (National Oceanic & Atmospheric Administration, n.d.). It was listed as endangered under the Endangered Species Conservation Act, the predecessor to the Endangered Species Act (ESA), in 1970. The bodies of sei whales range in colouring from murky blues to steely greys to deep browns. Along their heads, a single ridge runs from the tip of the nose to two blowholes and set aloft their backs is a sickle-shaped dorsal fin. Sei (pronounced “sigh”) whales are some of the largest animals on the planet, and one of the fastest whales in the sea. Bryde's (pronounced \"broodus\") whales are members of the baleen whale family. 50,000. While there are few confirmed acoustic recordings of sei whales worldwide, those presented here are similar in frequency to those recorded by Rankin and Barlow (2007) 12. Sei whales live in all oceans, although rarely in polar or tropical waters. They like the middle range temperatures as they avoid polar and tropical regions. It swims in small pods of 3-5 whales but larger groups may form at rich feeding grounds. Sei Whales are the third largest rorqual, after the blue whaleand the fin whale. The Sei whale (Balaenoptera borealis) is a dark-gray, stream-lined baleen whale that is found worldwide except in polar waters. Sei whales have a relatively slender body … Sei whales are widely distributed in open ocean waters in temperate and sub-polar regions, appearing to favour areas with temperatures between 8-18 degrees Celsius 2. They aren’t often seen though as they tend to stay in the deeper waters offshore. (2007). Sei Whale (Balaenoptera borealis) Habitat Inhabits both continental shelf and deep ocean Range Found worldwide, in tropical, subtropical and temperate seas. Sei whales typically only travel in pairs or as individuals, however, these vocalizations may be an indication that they are in long-range (>10 km) communication with other sei whales. When the ESA was passed in 1973, the sei whale was listed as endangered throughout its range. The Sei Whale consumes an average of 900 kilograms (2,000 pounds) of food each day, primarily copepods and krill, and other zooplankton. Within their northern range, sei whales mate between November and February, giving birth after an 11 - 12 month gestation period to a single calf. Map from NMFS 2011. One of the least well understood baleen whales, they are often confused with Bryde’s whales at sea, which … Unlike the fin whale, the sei whale tends not to rise high out of the water as it dives, usually just sinking below the surface. ایس فائل نوں کریٹو کامنز Attribution 2.5 پولینڈ لائسنس دتا گیا. As such, they appear to be absent from a band around the equator and do not range as far … As such, they appear to be absent from a band around the equator and do not range as far toward the poles and ice edge as other baleen whale species. Males are slightly smaller than females. Sei Whales are the 4 th largest rorqual (the largest group of baleen whales) after the Blue Whale, the Fin Whale, and the Humpback Whale. Sei whales are widely distributed in open ocean waters in temperate and sub-polar regions, appearing to favour areas with temperatures between 8-18 degrees Celsius2. The Sei Whale migrates annually from cool and subpolar waters in summer to temperate and subtropical waters for winter. The Norwegians observed that Sei whales and Pollock tended to arrive in the same areas at the same time every year. 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