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The sea archin releses sperm and eggs in to the water the eggs then get firtilised

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If you are talking about sea turtles, they just head out to the sea even though they never saw anyone do that besides themselves or their brothers and sisters. It is an inherited behavior. They just do it automatically. And pet and freshwater turtles just go inside. They get out of the place they were hatched, and then they go into the water to cool and wash themselves. This behavior is inherited.

Baby sea turtles use the presence of natural moonlight to find their way to the coast at night. This is why coastal light pollution is such a problem because it disorients the baby turtles.

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Although I can not say authoritatively, I can however say that fish can not "hear" as we do but instead sense vibrations with their swim bladder. Some fish, particularly fresh water Amazonian fish, sense the vibrations from thunder storms which act as a signal to spawn. Bass frequencies in music can imitate this. One would assume that their respiration rate would increase as a result of the urge to spawn.

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sharks, barracuda.

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kase ang english ng kotse ay CAR!

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To get food and survive.

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Seaweeds are not plants. They are protists. They differ from plants in that they lack vascular tissues (xylem and phloem), they have holdfasts instead of roots, and their cells do not have all of the plant characteristics.

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hcfr

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Phosphorescence occurs in places all over the world and it happens when small micro organisms " glow" in the water. These plankton like creatures come from the bottom of the ocean where it's dark so they only come out at night. I have seen phosphorescence in the puget sound before and it occurs around the middle of august in the summer but in the sound it only happens in summer. Most of the times I have noticed it's a clear night with no rain.

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They are all freshwater- there are no saltwater amphibians.

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This chapter covers the following animals.

Phylum: Nematoda (Roundworms)

Phylum: Arthropoda (Arthropods)

Subphylum: Cheliceriformes

Class: Arachnida (Arachnids - Spiders, Scorpions, Harvestmen, Ticks and Mites)

Class: Merostomata (Horseshoe Crabs)

Subphylum: Myriopoda

Class: Diplopoda (Millipedes)

Class: Chilopoda (Centipedes)

Subphylum: Hexapoda

Class: Insecta (Insects)

Subphylum: Crustacea

Examples of Crustaceans - Decapods (Shrimp, lobsters, crabs)

Copepods and Krill

Barnacles

Isopods

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Neither, it is a decomposer.

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Crabs live in aquatic habitats ,specifically near sea shores .

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The movement of water through a semipermeable membrane is called osmosis.

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Cnidaria are also known as jellyfish and are strictly a marine species and have a global distribution ranging from hot tropical waters up to temperate and artic waters. Cnidarians can be either mobile (moving) or sessile where they remain fixed in one location.

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Most arteries carry oxygenated (oxygen-rich) blood from the heart to the rest of the body. Most veins carry deoxygenated (containing less oxygen and more carbon dioxide and other wastes) blood from the body tissues to the heart, which then sends that blood through the pulmonary system to be oxygenated again. The only exception to this is the pulmonary system. The pulmonary veins carry oxygen-rich blood back to the heart and the pulmonary arteries carry deoxygenated blood from the heart to the lungs.

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Marine organisms have to live in ocean because that is the only way they would be able to survive. Marine= found in, or produced by the sea. So marine organisms live in the sea,oceans,etc.

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I thought it was because it helps both the predator and the prey survive longer in their habitat, but I just had a multiple choice biology test where it asked for an example of Mutualism, and I chose cryptic coloration, but he was looking for another choice which was coral and algae. So I guess not?

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The reason they can provide enough food is because whales eat so many of them (10-15 tons).

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There are many corals threatened with with extinction. Current estimates are that for a variety of reasons, pollution, fishing, disease, warming oceans fully one half of all corals are threated. Some examples are The Great Barrier Reef off Australia; the reefs of Hawaii in Kaneoke Bay and Waikiki Bay; reefs off Guam, the Virgin Islands, Jamaica, and Bermuda; and reefs in the Indian Ocean: all are in various stages of destruction. African states with endangered reefs in the western Indian Ocean include Kenya, Tanzania, Mozambique, Mauritius and the Seychelles. Florida's barrier reef was calculated in 1986 to be dying at the rate of 4% a year. In 1991, parts of the reef were dying at the rate of 10% a year. Reefs consist of many types of coral such as Brain, Staghorn, Pillar, Black, Whip, Fan etc.