2020年12月1日 · Marine mammals are warm-blooded vertebrates (animals with a backbone) that bear live young and nourish them with milk as land mammals do, but that spend most or all of …

2009年8月5日 · Manatees, aquatic mammals inhabiting Florida’s rivers and coastal waters, swim close to the surface and are frequently killed in collisions with boats. To address the problem, …

2013年4月3日 · Some thirty million years ago, Ganges river dolphins diverged from other toothed whales, making them one of the oldest species of aquatic mammals that use echolocation, or …

Marine mammals also need a streamlined head for fast and easy movement through water that external ears would impede. Instead, they have ear holes located right behind the eye. In …

2024年4月11日 · Seals are pinnipeds, a group of animals with three separate families—phocidae (eared seals), otaridae (non-eared seals), and odobenidae (walruses)—that are the only …

2018年4月25日 · Deep-diving whales and other marine mammals can get the bends - the same painful and potentially life-threatening decompression sickness that strikes scuba divers who …

2008年9月17日 · The research, published April 22, 2008, in the Proceedings of the National Academy of Sciences as the featured news item, could be extrapolated to improve …

Marine mammals "vocalize" in a variety of ways, each of them suited to a particular behavior or situation. Dolphins, for instance, exhibit two main types of vocalization: clicks (~80K) and …

2020年6月25日 · Aquaculture is the farming of aquatic animals or plants principally for food. It includes the breeding, rearing, and harvesting of fish, mollusks, crustaceans, and plants in …

web dynamics, and harm aquatic health. Both toxic and non-toxic blooms can cause a wide range of detrimental effects at the ecosystem level. Toxic HAB species can cause fish kills and …