marine lifewhat is the ocean that represents the greatest biodiversity?

Expert Answers
pohnpei397 eNotes educator| Certified Educator

Tropical oceans have the greatest biodiversity, but they have the least biomass -- they have less total life but more kinds of life.

This is because tropical oceans are warmer and do not have as much oxygen or carbon dioxide in the water as colder areas do.  This means that fewer microorganisms can grow and therefore there is less food for larger animals.

At the same time, though, there are more different kinds of animals that are exploiting different little niches in the biome so that they can survive even in the absense of abundant nutrients.

litteacher8 eNotes educator| Certified Educator
Oceans are diverse because they cover a lot of area both in width and depth. Are you looking for a specific ocean, or just about oceans in general? Ocean have more life than we will ever actually be able to see, and we are constantly discovering new species, so therefore oceans are some of the most bio-diverse areas on Earth.
giorgiana1976 | Student

Since the Pacific Ocean is spread over 135,663 kms of coastlines of North and South America, Asia, Australia, we can say that this is the ocean that represents the most the biodiversity of ocean and marine life.

We can find in here, from the greatest coral reefs of the world to the famous whales (blue whale, humpback) and ferocious predators, the fierce sharks.

There are various speciesof fish, crustaceans and plankton, some of them being in danger of extinction.

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