What do marine organisms need to survive?

Light, pressure, temperature, and food are typical features of the ocean that remain stable over long periods, allowing animals time to evolve in order to survive.

What are two major factors that most marine organisms depend on for their survival?

Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one the most important abiotic factors for marine ecosystems.

What are marine organisms dependent on?

The oceans provide an abundance of resources for humans including oxygen, food, energy, and recreation. As ocean water temperatures warm, the distribution of many marine species—including those we rely on for food—will shift due to their dependence on specific water temperatures and nutrient availability.

How do organisms survive in the deep ocean?

Most of the deep-sea creatures live thousands of feet below the water surface. … These creatures have several adaptations like compressible lungs, lung-like swim bladders, etc., to help them overcome the high water pressure in their deep-water environment.

What factors affect marine life?

Numerous things can affect marine life, including pollution, temperature, ocean currents and the sea’s chemical balance.
  • Pollution. Experts contend that water contamination or pollution is the greatest factor that affects marine life. …
  • Rising Temperatures. …
  • Ocean Currents. …
  • Chemical Balance.

What are the factors that influence marine life?

In our oceans, there are a number of environmental conditions that affect the growth, survival and productivity of marine organisms. These include light availability, oxygen levels, water movement, salinity, density and pH.

How marine organisms adapt to the surface of the ocean?

Temperatures vary dramatically between the surface and the ocean floor. Marine life has developed many adaptations to the variations in temperature. Many marine mammals have blubber for insulation from the cold, and some fish have an antifreeze-like substance in their blood to keep it flowing.

How do fish survive in the ocean?

Fish live underwater. … Fish do not breathe air. They get the oxygen they need from the water they live in. Fish have special filters in the sides of their body called ‘gills’ that act as their ‘lungs’.

How marine animals adapt to living in cold water?

Unique adaptations for freezing avoidance include the synthesis of low molecular mass ice-nucleating proteins that control and induce extracellular ice-formation. fish, maximum swimming speeds are lower than for temperate and tropical species, particularly for early stages in the life history.

How do marine animals survive in water without air contact?

They do not require any oxygen. They take oxygen from water. They only produce oxygen in their body. They get oxygen from water plants.

What adaptations do coral reefs have?

Some corals have adaptations to survive coral bleaching. That is, they have their own natural protection. They produce a kind of sunblock, called a fluorescent pigment. These pigments form a shield around the zooxanthellae and at high temperatures they protect them from the harmful effects of sunlight and UV rays.

What are five adaptations that are needed for aquatic animals to live on land?

Must be able to withstand the effects of gravity. Must be able to breathe air. Must minimize water loss (desiccation) Must adjust its senses so that they are suited for air instead of water.