Calves are born after an 11.5-month gestation period and weigh about 4 tons. Other nearby haunts of this cosmopolitan species include the Arabian Sea and the Bay of Bengal, including Ninety East Ridge. Immature Blaineville's are toothless. 410 0 obj <>stream Differences in dorsal fin shape (including the hump when present), head shape and colour all help distinguish between the two species. Populations of Pilot Whales are usually determined by the location of schools of squid, their primary food. Their coats vary from light gray or tan to brown and red, with black or light spots. The pups are dark brown at birth and soon molt into a lighter brown coat within the first month. On the contrary, most specimens of the Bottlenose Dolphin are smaller, averaging about 9 feet and weighing about 500 pounds. Seven narrow ridges extend down the length of this carapace. In order to distinguish the two mammals, one should note that the Goosebeaked Whale could reach a much larger length. Weight: 180-240kg, max. Belugas have evolved to live in cold seas, especially along the Arctic coasts (of Greenland, Canada, Alaska and Russia). Young Harbor Porpoises are born from April through July, after a gestation period of 11 months. The Harp Seal is found most commonly in the North Atlantic and Arctic Oceans and north of Russia, but it has been known to wander as far south as Virginia. The teeth of an adult male True's Beaked Whale are visible near the tip of the jaw. The beak is very long on this dolphin and they have a long dorsal fin too. Striped Dolphin Reproduction. Females reach sexual maturity at about 6 years of age, while in males it does not occur until 12 years of age. They are stocky with large flippers and huge arching lips that cover and protect their delicate baleen plates. endstream endobj 412 0 obj <>stream When observing the head of a True's, one should note the small head, pronounced beak, position of blowhole in the indentation behind the forehead and the two V-shaped throat grooves that are characteristic of Beaked Whales. Fraser's dolphins also have an eye-to-anus stripe, but are much more robust, with tiny appendages. This nasal cavity can be enlarged to twice the size of a football when the animal is angered, and forms a hood running from just behind the eyes to the upper lip. The short nursing period means that the pups gain weight 2.5 to 6 times faster than any other phocid pups. Most males carry numerous scars. As they age, they gradually lighten to slate gray. The Hooded Seal gets its name from the enlarged nasal cavity of the adult male. What do striped dolphins look like? At 5 to 6 months of age, they molt again, but this time their purlage becomes blonde to light brown. From the front, the nostrils appear to have a "V" or heart shape. They have extremely good eyesight both in and out of the water. Wild Harbor Seals probably consume 6 to 8 percent of their body weight in food per day, depending on the nutritional value of the food being eaten. Their skin is usually wrinkled. Whether itâs in the ocean or at a place like Sea World, dolphins are extremely beautiful and entertaining to watch. The subspecies known as the Gray’s or Hawaiian spinner dolphin. More recently, a pelagic species has been discovered. Come visit us in Pico! It is fairly easy to identify, because its lower jaw swells to a larger prominence, or rise, midway along its length. (Little knowledge and data has been recorded, because little is known about this deep-sea whale). This yellow area runs up toward the dorsal ridge of the tail. It will enter streams, coastal bays, or creeks. The females will generally inhabit waters between latitude 30 and 50 degrees north. This species has a carapace color of brown to olive. One stripe runs to the flipper and the other dips down to the belly. Most females bear a calf annually. Its head only takes up about 1/7 of its total body length. Moreover, the eyes are set closer to the ear on the Grey Seal rather than farther forward like those of the Harbor Seal. The females are usually lighter in appearance, especially around the neck, and have irregular patches of black or dark brown on a lighter background. The North Atlantic Right Whales are distributed from Bear Island, Spitzbergen and Nordkap to Spain, Portugal, North Africa, the Carolinas, Florida and the southern area of the Gulf of Mexico. © 2020 CetaceanWatching Lda. True's Beaked Whales may be confused with the Goosebeaked Whale. As in the True's Beaked Whale, this species also has teeth located at the tip of the lower jaw.
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