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There are some whales that are supposed to be extinct. But some "extinct" animals have been found in deeper waters. There are also ancient marine mamels during the dinosour periods.

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What are examples of marine fossils?

Marine fossils include a variety of organisms that lived in ocean environments, such as ammonites, which are extinct marine cephalopods with coiled shells; trilobites, a group of extinct arthropods; and brachiopods, which are bivalve-like organisms with hard shells. Other examples are corals, which can form extensive reef structures, and echinoderms like sea urchins and starfish. Additionally, fossilized remains of marine mammals, such as whales and dolphins, can also be found in the geological record.


Are marine otters extinct?

No, marine otters are not extinct. While they have faced threats from hunting and habitat loss, populations of marine otters still exist in various regions, particularly along the coastlines of the Pacific Ocean. Efforts are being made to protect and conserve these otters to prevent extinction.


What is the meaning of marine organisms?

Marine organisms are living organisms that inhabit the oceans and other saltwater bodies. They encompass a wide range of species, from microscopic plankton to large marine mammals, and play crucial roles in marine ecosystems.


What is a mammals ecological niche?

The extinct dog-like mammals are from a biological family of carnivorous mainly called Canidae. The Canidae includes almost 34 species from the manned wolf to bush dogs (short in length).


What mammals are in the order Sirenia?

Mammals in the order Sirenia include manatees, dugongs, and the extinct Stellar's sea cow. They are known for their aquatic lifestyle, herbivorous diet, and unique paddle-like flippers.