Rotifers (Philodina sp.), Light Micrograph
The bdelloid rotifer, found in freshwater habitats all over the world, is able to withstand extreme cold. According to a recent discovery in northeastern Siberia, these multicellular organisms can be frozen for up to 24,000 years and live to tell the tale!
The average life span of us humans, 78 years, is not much compared to other creatures. Some birds live up to 100 years, eels have been recorded at 106, tortoises 150, and Koi fish over 200. The slow moving Greenland shark has been recorded at 512 years.
Still these are just flashes in the pan compared to rotifers. Scientists recently restored rotifers that had been frozen in the Siberian permafrost for over 24,000 years, meaning these creatures were alive during the Late Pleistocene Era - when Wooly Mammoths roamed the earth.
Stock Images and Video of Rotifers and Other Long-lived Animals
A rotifer is part of a group of seemingly invincible creatures, such as nematodes and tardigrades. Tardigrades have even been sent to outer space and survived.
Rotifers are a type of microscopic animal that is often found in zooplankton in either freshwater or saltwater. Rev. John Harris, in 1696, was the first to mention these creatures. They are commonly referred to as wheel animals due to the motion of the cilia surrounding their mouths, which looks like a spinning wheel.
Rotifers are filter feeders that eat dead bacteria and other decaying organic matter. When they move around, they compress their bodies into round shapes and extend out into a long thin shape. In terms of size they can range from 50 micrometers to over 2 millimeters.
