Alive - - Micro World -

The long­est known ne­ma­tode is 13 me­tres long and it re­sides in the sperm whale. One cu­bic me­tre of soil con­tains more than a mil­lion. They are found ev­ery­where: fresh and salt wa­ter, moun­tains, the bot­tom of the ocean, deserts and marshes.

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