What do ocean scientists do?

According to the results of the Census of Marine Life, the 2010 Census, scientists said more than 230,000 species of organisms are living in the oceans , and new humans have been examined. destroying 1/5 number of species. So how can the experts give the above figure?

Life under the ocean.(Artwork - source: Internet )

According to Dr. Tom Webb, ocean ecologist at Sheffield University (UK) and a member of the research team, there are many different measures used to count the number of marine organisms.'We asked divers to survey and count the number of organisms they see. Scientists can also organize nets to collect data. In addition, we also use sieves to classify sludge samples at the bottom of the sea, then use extrapolation to estimate population. of the ocean ' , Dr. Webb revealed.

When estimating how many undiscovered marine species are estimated, he said scientists use 'rate dilution' techniques . 'Imagine when you drop the net in a pond behind the garden. In the first batch, the fish you see are all new, but the second one, you will find some of the fish you saw last time. And so, the rate of discovering new species will decrease ' , Webb explained.