Which group of animals is found in marine habitat?

The phylum Echinodermata contains about 6000 species are spiny-skinned animals. This phylum exists exclusively in the sea, and cannot be found on land or in freshwater. Hence, option B is correct.

What are characteristics of marine habitat?

Marine ecosystems are characterized by factors such as availability of light, food and nutrients. Other factors that affect marine ecosystems include water temperature, depth and salinity, as well as local topography.

Where is most marine life?

Ocean habitats can be divided into two: coastal and open ocean habitats. Most ocean life can be found in coastal habitats on the continental shelf, even if this area occupies only 7% of the total ocean area. Most of the open ocean habitats are found in the deep ocean beyond the edge of the continental shelf.

Is a dolphin a marine animal?

Dolphins are highly intelligent marine mammals and are part of the family of toothed whales that includes orcas and pilot whales. They are found worldwide, mostly in shallow seas of the continental shelves, and are carnivores, mostly eating fish and squid.

What are the five characteristics of marine habitat?

Habitats range in size, and their characteristics are determined by a large number of variables. In the marine environment, these variables include light, temperature, substrate, wave action and oxygen availability. The particular combination of variables results in a habitat suitable for particular types of organisms.

What is an example of marine habitat?

Marine habitats include coastal zones, intertidal zones, sandy shores, rocky shores, mudflats, swamps and salt marshes, estuaries, kelp forests, seagrasses, and coral reefs. In addition, in the open ocean there are surface waters, deep sea and sea floor.

Which ocean is rich in marine life?

Pacific Ocean
There are 400 known fish species living in Arctic seas and adjacent waters, most living on or near the bottom. So, based on global fisheries and the overall biodiversity of coral reef ecosystems, the Pacific Ocean wins for most marine life.

What is the oldest living marine animal?

bowhead whale
Scientists agree that the bowhead whale has the longest lifespan of all marine mammals.

What is the most important marine animal?

Blue whales
So, what is the most important living thing in the ocean? Perhaps it is the magnificent blue whale? Blue whales are the largest living animals on Earth. The average blue whale reaches lengths of almost 100 feet, or 30 meters, and can weight up to 170 tons.

What are some examples of marine animals?

There are five groups of marine mammals: pinnipeds (seals, sea lions, fur seals, and walruses ), cetaceans (whales, dolphins, and porpoises), sea otters, sirenians ( dugongs and manatees), and polar bears.

What animals live in marine life?

They include: About 20 species of whales and dolphins Fish, including Atlantic cod, bluefin tuna, ocean sunfish, basking sharks, thresher sharks, mako sharks, haddock, and flounder Marine invertebrates such as lobsters, crabs, sea stars, brittle stars, scallops, oysters, and mussels Marine algae, such as kelp, sea lettuce, wrack, and Irish moss

What is the most deadly marine animal?

The Australian box jellyfish is considered the most venomous marine animal. Craybdea branchi, pictured here, is a relative of the Australian box jellyfish ( Chironex fleckeri ), which is considered the most venomous marine animal.

What is the most common sea animal?

Clam