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A humpback whale (Megaptera novaeangliae) A leopard seal (Hydrurga leptonyx). Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears.
The following is a list of lakes in Ohio. According to the Ohio Department of Natural Resources , there are approximately 50,000 lakes and small ponds, with a total surface area of 200,000 acres, and among these there are 2,200 lakes of 5 acres (2.0 ha) or greater with a total surface area of 134,000 acres. [ 1 ]
Some protists accomplish this using contractile vacuoles, while freshwater fish excrete excess water via the kidney. [4] Although most aquatic organisms have a limited ability to regulate their osmotic balance and therefore can only live within a narrow range of salinity, diadromous fish have the ability to migrate between fresh and saline ...
Most river dolphin species live exclusively in fresh water. [56] Many species inhabit specific latitudes, often in tropical or subtropical waters, such as Bryde's whale or Risso's dolphin. Others are found only in a specific body of water. The southern right whale dolphin and the hourglass dolphin live only in the Southern Ocean.
Whales are fully aquatic, open-ocean animals: they can feed, mate, give birth, suckle and raise their young at sea. Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 tonnes (210 short tons) blue whale, which is the
The white-tailed deer is the state mammal of Ohio. This list of mammals of Ohio includes a total of 70 mammal species recorded in the state of Ohio. [1] Of these, three (the American black bear, Indiana bat, and Allegheny woodrat) are listed as endangered in the state; four (the brown rat, black rat, house mouse, and wild boar) are introduced; three (the gray bat, Mexican free-tailed bat and ...
March 1, 2024, marks Ohio's 221st birthday. That's right: the Buckeye State was officially granted statehood on March 1, 1803 — 27 years after the United States declared independence from ...
From 1976 to 1997, 55 whales were taken from the wild in Iceland, 19 from Japan, and three from Argentina. These figures exclude animals that died during capture. Live captures fell dramatically in the 1990s, and by 1999, about 40% of the 48 animals on display in the world were captive-born. [225]