What is the most abundant living thing in the ocean? Is it fish?

The vast oceans are home to a huge variety of organisms, and so far, scientists have not been able to tell exact numbers how many creatures there are. So who are the most abundant creatures in the ocean?

The answer is not the fish that can swim freely, but some tiny creatures that we can't see, their individuals are very small and need a microscope to see, but their numbers are very staggering, with an average of about 1 million per milliliter of seawater, including some microalgae, fungi, bacteria, archaea, viruses, etc., collectively known as microorganisms.

Once, the Dutch scientist Leeuwenhoek (1632-1723) discovered microorganisms, which caused a sensation. Now it seems that what he sees under the microscope is not too small, and the really small microorganisms can only be found with an electron microscope. But there are more of them than most people can imagine.

The largest of the microorganisms is the protozoa, which are single-celled but have a nucleus, and are eukaryotic like you and me. If we compare the number of individuals per unit area, protozoa is 12 orders of magnitude higher than mammals.

Unicellular algae such as diatoms, lithophyllas, dinoflagellates, etc., are eukaryotes. Smaller than them are prokaryotes without a nucleus, including bacteria and archaea, which are also producers in the oceans and produce organic matter. The smallest of these, such as Prochlorococcus, is less than a micron and is the smallest autotroph in the world.

Even smaller than them are viruses, which are measured in nanometers. Viruses have no cellular structure and cannot reproduce independently, so it is debated whether they are living organisms or not, but they are an important part of the marine ecosystem.

The number of microorganisms in the ocean is often the opposite of its size, and the smaller the size, the more numerous. Some people say that there are an average of 10 protozoa and 10 eukaryotic algae in 1 milliliter of seawater, as well as 100 prochlorococcus, 1,000 bacteria and 10,000 viruses. Speaking of which, we can turn to the question of "what is the most abundant creature in the ocean":

In terms of biomass, prokaryotes (bacteria, archaea) were the largest, accounting for 90% of all microorganisms, although the number of individuals was less than 10% of the total; Although the biomass accounts for only 5% of the marine microorganisms, the number of individuals has reached 94%, and it is estimated that there are 1,030 viruses in the entire ocean, which is more than 60 times the diameter of the Milky Way!

The most abundant organisms in the ocean are microscopic organisms, not fish. These tiny creatures are so small that they can only be seen with a microscope, and the number is very staggering.

The most organisms in the ocean are microorganisms and parasites, and the most organisms are not fish, because there are some microorganisms and parasites that we can't see, but these things live in the ocean.

The most abundant organisms in the ocean are microscopic organisms, including viruses, fungi, bacteria, archaea, microalgae, and many more, not fish.

No, the most common organisms are plankton, because the cells of this organism multiply very quickly, and there are many similar organisms in the ocean.

The most common organisms are some microorganisms, which are very strong and very diverse, and they are not fish.

The most abundant organisms in the ocean are: plankton. Plankton: Marine organisms suspended in the water column and often move with currents.

These organisms lack well-developed locomotor organs and have little or no ability to swim; The vast majority of specimens are small enough to be seen under a microscope, with the exception of a few species that are very large.

Morphological characteristics. Plankton are small in size, most of them are invisible to the naked eye, suspended in the water column and have poor swimming ability, and are mainly governed by the current and move, called plankton. Plankton is a group of organisms that are classified according to their lifestyle, not by species.

The most abundant organisms in the ocean are: marine mollusks, marine crustaceans, marine protozoan coarseness, algae plants, cnidarians.

1. Marine mollusks

They secrete limestone from their bodies, which are used as building materials to build "houses" and use as their own shelters, often referred to as shellfish. There are many species of molluscs, second only to arthropods – more than 100,000 species exist.

2. Marine crustaceans

Marine crustaceans are marine animals with segmented bodies, chitin (chitin) shells, 5 pairs of appendages on the head (the first two pairs are antennae), and breathe with gills or **, and are also one of the most abundant creatures in the ocean.

3. Stool and marine protozoa

Protozoa are the most primitive and lowest-ranking animals in the animal kingdom; Marine protozoa, on the other hand, are tiny, single-celled (including groups of single-celled) marine animals.

4. Algae plants

The most abundant organisms in the ocean are plankton, which is also one of the largest groups of organisms in the ocean, while algae plants are the most abundant in jujube stool plankton.

5. Cnidarians

Cnidarians, also known as cnidarians, used to be called coelenterates because its meaning applies to cnidarians and ctenophores, so it is now mostly abandoned.

The most abundant organisms in the ocean are plankton, also known as planktonic ecosystems. Plankton refers to tiny organisms such as phytoplankton and zooplankton that cannot actively move and can only float with currents. They usually live near the surface of the sea and make up the vast majority of marine life.

Plankton play an important role in marine ecosystems as they are the bottom of the food chain, providing the essential nutrients that are disrupted by marine ecosystems. Phytoplankton produce organic matter through photosynthesis to provide food or tokens for zooplankton and other marine life. Plankton are also an important source of oxygen in the ocean, releasing oxygen through photosynthesis to provide essential oxygen to marine ecosystems.

The survival of plankton is affected by the marine environment, such as water temperature, nutrient content, sea water pH, etc. In some cases, environmental changes, such as excessive nutrient pollution and rising water temperatures, can lead to an increase in plankton populations, triggering problems such as red tides. Because of this, protecting the marine environment is essential to maintain the survival of plankton.

The most abundant organisms in the ocean are plankton. Plankton includes a variety of tiny organisms such as phytoplankton (e.g., planktonic algae) and zooplankton (e.g., planktonic crustaceans, planktonic mollusks, etc.). They are found in the surface layer of the ocean and in the water column and are large and widely distributed.

Plankton plays an important role in the marine food chain, providing food for other organisms**, and it is also involved in the energy conversion and material cycling processes of marine ecosystems.

Due to their wide variety and abundance of plankton, they have an important impact on the stability and health of marine ecosystems. The ocean contains the largest and deepest body of water in the world. They are made up of five Oceanias, which are the Pacific, Atlantic, Indian, Antarctica, and Arctic Oceans.

The deepest ocean area is the Mariana Trench, which reaches a depth of about 11,034 meters.

The ocean is one of the most biodiverse ecosystems. They house a wide variety of creatures, including phytoplankton, zooplankton, seagrass, corals, fish, dolphins, whales, and many more. Marine ecosystems provide many key ecosystem services, such as oxygen production, carbon sequestration, food**, and more.

The ocean plays an important role in regulating the Earth's climate.

By absorbing and releasing heat, the ocean has the ability to influence atmospheric circulation and climate patterns. The ocean also plays a role in regulating global temperatures, helping to slow climate change by absorbing large amounts of carbon dioxide. The ocean provides many economic resources and opportunities for humanity.

Fishery resources are abundant in the oceans, providing food and employment opportunities. In addition, the ocean also contains valuable energy and mineral resources such as oil, natural gas, and minerals.

What is the most living thing in the ocean? In the vast ocean, there are so many creatures that even scientists can't explain with exact numbers, and they have a wide variety of species, everything, and what is the most abundant life in the ocean.

The most abundant are plankton.

Marine Plankton Marine Plankton is a marine organism suspended in an aqueous column that often moves with currents. These organisms lack well-developed locomotor organs and have little or no ability to swim; The vast majority of specimens are small enough to be seen under a microscope, with the exception of a few species that are very large.

For example, the maximum diameter of the Arcanea arctica can reach 2 meters; It is very diverse and belongs to most of the phyla of the plant kingdom and the animal kingdom; The number is very large and widely distributed, and it is found in almost every sea area of the world.

In 1887, the German planktonic biologist VHenson was the first to adopt"The term "plankton" refers specifically to plankton. The word comes from the Greek word for wandering.

The most abundant organisms in the ocean are plankton, which are drifting organisms that live in water and lack the ability to move effectively. Plankton are small, mostly invisible to the naked eye, and have a poor ability to swim, moving mainly by currents. Common plankton are jellyfish, krill, small jellyfish, diatoms, bacteria, etc.

In the ocean or deep lakes, plankton inhabit the water at different depths. But for phytoplankton to photosynthesize, they can only be distributed in the upper layer with light.

Plankton are the basis of the productivity of other organisms in the waters, and due to their wide distribution and strong fecundity, they are natural bait for shellfish, shrimp and fish larvae. However, some plankton such as cyanobacteria and dinoflagellates can produce "lake indigo" or "red tide" if they are overbred and contain potatoes, killing economic aquatic animals.