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sei whale habitat

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Sei whales can be broken down into two sub species: the northern sei whale and the southern sei whale. In highly commercialized areas these whales may be threatened by potential collisions with large ships or boats. This Sei Whale was a juvenile male, 38 feet in length and still not at the adult size of 45 feet. It prefers waters with a surface temperature of 46-77 ° F (8-25 ° C). Sonic whale. They eat around 900 kgs (1,985 lbs) of food per day. The sei whale can be found swimming in all of the worlds major oceans, however certain populations may be more abundant than others. Breeding Sei Whales breed during the winter months and after a gestation of 10.5 - 12 months a single calf is born. In the 1980’s the International Whaling Commission made whaling illegal; however, illegal poaching still continues today. Sei whale has pointed rostrum (snout), short pectoral fins, tall, slightly hooked dorsal fin … 9) Because the sei whale is a baleen whale it is born with two blowholes and lacks teeth, which are instead replaced with up to 400 baleen plates packed with bristles that are used to filter their prey from the water. The global distribution of sei whales is unpredictable and poorly understood. 3) The scientific name for the sei whale is, “Balaenoptera borealis”. Introduction to Sei Whale. Migration for the sei whale typically involves traveling to cooler waters during the warmer summer months in order to obtain food and build up their supply of blubber. The take of these animals peaked in the 1964-65 season, when 25,454 of these whales were taken. Most sei whales appear to prefer living in moderate temperate cool to warm waters rather then in the freezing polar or hottest tropical regions of the world. Maturity is typically reached at around 7 – 11 years which is when these whales can begin mating and reproducing, however they do not reach full maturity until . 7) The only known potential natural predators of the sei whale is a pack of killer whale. Sei whales can blow water straight up out of their blow hole to a height up to 13 feet (four meters) (NMFS 2011, National Oceanic & Atmospheric Administration, n.d.). Once its prey is captured it then pushes the water out of its mouth while keeping its food trapped in the baleen plates. Their skin is often covered in scars that become apparent after healing from being attacked or injured. During feeding periods these whales may dive for up to 20 minutes while searching for food. The movement patterns of sei whales are not well known, but they are typically observed in deeper waters far from the coastline. These whales can reach speeds in excess of 30 miles per hour for short bursts/periods of time. The Sei Whale migrates annually from cool and subpolar waters in summer to temperate and subtropical waters for winter. Their diet primarily consists of zooplankton (copepods and krill); however, small fish and squid can also be part of their diet (National Oceanic & Atmospheric Administration, n.d.). Since sei whales are marine mammals they produce milk and the mother whale feeds her newborn by producing milk from her mammary gland which the child suckles from her nipple. Hunting of these whales by humans has been high since the 1950s. This is believed to be one of the fastest of all whales, and it can easily travel several miles per day while migrating. He also said the whale becomes tired after a couple of hundred meters and needs to calm down, just like a cheetah. The sei whale is one of the fastest whales, with a cruising speed of 16 mph and a maximum speed reaching up to 35 - 40 mph. The sei whale can be found swimming in all of the worlds major oceans, however certain populations may be more abundant than others. Critical Habitat The sei whale population was decimated by commercial whaling in the 1800s and early 1900s. They are also known to feed on fish and squid if they are encountered. 2) Because the sei whale is a marine mammal it is warm-blooded, produces milk, gives birth and breathes air. The organ samples will be able to give more information to scientists about this whale’s health as well as add to the knowledge of this species. 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. 620 S. Meridian St. • Tallahassee, FL • (850) 488-4676 Sei whales inhabit all oceans and adjoining seas except in tropical and polar regions. It was listed as endangered under the Endangered Species Conservation Act, the predecessor to the Endangered Species Act (ESA), in 1970. Once born the mother will nurse her child and look after it and may continue to feed the calf milk for up to 9 months. These whales have a dark bluish-gray appearance with a lighter pale under-body. Sei whales are also Federally protected as a Depleted species by the Marine Mammal Protection Act. Previously before the whaling era these marine mammals were a much more abundant species throughout the world, however extensive hunting has caused significant decreases in certain sei whale populations. 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. Florida Youth Conservation Centers Network, Florida’s Endangered and Threatened Species Rule, International Union for Conservation of Nature, National Oceanic & Atmospheric Administration, Smithsonian National Museum of Natural History, http://www.nmfs.noaa.gov/pr/species/mammals/cetaceans/seiwhale.htm, See a full list of our Social Media accounts. During the summer, they are commonly found in the Gulf of Maine, and on Georges Bank and Stellwagen Bank off the U.S. coast in the western North Atlantic. Best, P.B. They are 40 to 60 feet long and weigh around 100,000 pounds! The common name sei, pronounced “say” or “sigh” is derived from the Norwegian word for pollack (seje) - the whale usually appears in … Disclosure Policy | Privacy Policy | Copyright © 2020 WhaleFacts.org. Like other great whales, they prefer to spend the summer feeding in cooler waters before migrating to … In areas where commercial fishing is extremely competitive over fishing causing some populations to relocate or face difficulties maintaining their food supply. They are big eaters and are able to consume as much as 2,000 pounds of food per day. 5) The sei whale can be found in all of the worlds major oceans, however they tend to avoid extremely cold/hot climates near the polar and tropical regions of the world. The sei whale is a baleen whale and belongs to the group known as Cetacea which also all whales, dolphins and porpoises. Sei Whales are found in the Atlantic, Pacific, and Indian Oceans. Habitat The sei whale can be found around the outer continental shelf and slope in the Atlantic, Pacific, and Indian Ocean (National Oceanic & Atmospheric Administration, n.d.). 24 p. 111-133. Other threats include incidental capture in fish nets that can cause whales to drown. Despite their large size these whales maintain a diet consisting primarily of krill, copepods, fish and plankton. The total gestation period can last up to the 12 months, with the female giving birth to one calf every other year. Calves are weaned around seven months. These whales are known for creating very loud low-pitched sounds. During the colder winter months these whales will travel towards the warmer tropical/sub tropical environments where they and mate and give birth to their offspring. Found worldwide, the sei whale once numbered in the hundreds of thousands. Photo courtesy of Christin Khan from NOAA. One of the least well understood baleen whales, they are often confused with Bryde’s whales at sea, which m… The sei whale is found in all oceans. HABITAT AND DISTRIBUTION. Sei Whale Balaenoptera borealis. Sei Whales are protected under the Marine Mammal Protection Act of 1972 and the Endangered Species Act of 1973. 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