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The day in numbers: 2

Compiled by Sunaina Gulati for CNN
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(CNN) -- Two species of fish previously unknown to science are currently being discovered each week by different projects around the world. A census has been launched to map life under the waves in the least explored environment on earth.

50 million: An ancient shrimp, thought to have become extinct 50 million years ago was spotted on a sea mount near the Philippines. Nicknamed Jurassic shrimp, this prehistoric creature was previously known only from fossil records.

1700: The number of scientists from 73 different nations that are involved in the census.

500 million: The amount of money in pounds being spent on the census that is also using half of the world's large research vessels and submersibles.

1.8 kilograms: The weight of a half-meter spiny lobster found by the team off the coast of Madagascar.

30: The percentage of the world's oceans in which sharks are found -- and rarely below 3000 meters

8 million: The number of fish found off the New Jersey coast in a shoal bigger than the area of the island of Manhattan.

10,000: The advance sonar equipment that detected the shoal can map oceanic areas up to 10,000 times larger than previously possible.

2 - 407 Celsius: The range of temperatures around deep hot vents where only certain species like shrimp can survive.

20: More than 20 species have been tagged with tiny radio transmitters including sharks, squid, sea lions and albatrosses, which feed back information on migration patterns and ocean currents.

600 days: The number of days a tagged bluefin tuna took to make three crossings of the Pacific. The results shocked scientists as the distance covered is greater than the earth's circumference.

4000: Short sequences of DNA have been used to track more than 4000 freshly discovered species in the census database.

19: The number of other ocean expeditions that were mounted this year by scientists.

700 meters: The depth of a hole of Antarctic ice drilled by scientists on board another research vessel looking for life in the Nazare canyon in the sea off Portugal.

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