Marine Mammals - Woods Hole Oceanographic Institution
2020年12月1日 · The WHOI Marine Mammal Center (MMC), fosters research on whales, dolphins, and seals, including their behavior, health, anatomy, and perception; methods to free entangled whales and the causes of strandings; and marine mammal populations' link to ocean conditions and plankton abundance. A particular focus is the endangered north Atlantic right ...
Seal Facts - Woods Hole Oceanographic Institution
2023年11月16日 · Seals are protected from the cold by a thick layer of blubber; a clear membrane covers their eyes and their nostrils close and blood circulation to most of their organs is reduced while diving. They also have sensitive whiskers that help them detect prey in murky water. Seals can sleep underwater and can even surface to breathe without waking.
How Do Marine Mammals Avoid the Bends?
April 25, 2018. 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 surface too quickly. A new study offers a hypothesis of how marine mammals generally avoid getting the bends and how they can succumb under stressful conditions.
How do manatees stay hydrated? - Woods Hole Oceanographic …
Physiology also plays a role. Like many other organisms, manatees can produce water through the metabolic breakdown of food. In other words, their bodies’ chemical reactions during digestion release H 2 O as a byproduct. This is the well-oiled machine of an age-old animal’s body—they can hydrate without even drinking.
The Sound of Sonar and the Fury about Whale Strandings
2008年2月15日 · The Sound of Sonar and the Fury about Whale Strandings. Navy and scientists join efforts to learn more about marine mammals' response to sonar. Eight years ago, several U.S. Navy destroyers used sonar in the Bahamas during routine training exercises. Within 36 hours, 17 animals—including 14 beaked whales, one of the world’s deepest-diving ...
How marine mammal ears are different from ours
But the differences don't end there. 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 bottlenosed dolphins, the ear hole is only 2-3 millimeters in diameter. Some scientists believe that the toothed whales have ear ...
Marine Mammal Acoustics - Woods Hole Oceanographic Institution
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 whistles (~120K). The "clicks" are used in echolocation to find food. Each individual dolphin also has a series of whistles (like a Morse code) distinct from ...
Sea Life Is Accumulating Pathogens - Woods Hole Oceanographic …
2008年8月21日 · Sea Life Is Accumulating Pathogens. A wide range of marine animals also contains microbes that are resistant to antibiotics. An unprecedented survey of seabirds, marine mammals, and sharks on the U.S. East Coast has revealed that marine wildlife contains a wide variety of disease-causing microbes—including many that have developed resistance ...
The Deepest Divers - Woods Hole Oceanographic Institution
2007年7月3日 · The tags, invented in 1999 by Woods Hole Oceanographic Institution engineer Mark Johnson, are instruments that record the movements and sounds made by marine mammals, and the sounds around them in their inaccessible underwater environment. Johnson developed the tags to get a better sense of what whales were doing in the depths.
Human Activity Is Causing Toxic Thallium to Enter the Baltic Sea ...
2024年5月2日 · Currently, the amount of thallium (element symbol TI), which is considered the most toxic metal for mammals, remains low in Baltic seawater. However, the research suggests that the amount of thallium could increase due to further anthropogenic, or human induced, activities, or due to natural or human re-oxygenation of the Baltic that could make ...