21. Johan specialises in invertebrates, particularly tardigrades . 22. Tardigrades are microscopic invertebrates that live among mosses and lichens, and in lakes and oceans.23. It has been observed in tardigrades . 24. As they call down to warn Sadie, she realizes she is standing amid the tardigrades . 25. He focused on the tardigrade , a tiny water animal famous for its virtually indestructible elliptical form. 26. Some extremophile microrganisms, such as tardigrades , can survive vacuum for a period of days or weeks. 27. The anatomy of the reproductive system is an important defining feature in distinguishing the different groups of tardigrades . 28. In this case the tardigrades were actually exposed to the ultra high altitude of the Space Shuttle orbit. 29. Tardigrades are prevalent in mosses and lichens and feed on plant cells, algae, and small invertebrates.30. Tardigrades , in the case of " Echiniscoides wyethi ", may be found on barnacles.
