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Water bear, SEM C016 / 9085
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Water bear, SEM C016 / 9085
Water bear (Echiniscus granulatus). Coloured scanning electron micrograph (SEM) showing the underside of a water bear, or tardigrade (phylum Tardigrada). Water bears are small, water-dwelling, segmented micro-animals with eight legs that live in damp habitats such as moss or lichen. They are classed as extremophiles as they can survive dry conditions by changing into a desiccated state, in which they can remain for many years. Whilst in this form (known as a tun) they can withstand the most extreme environments and can tolerate radiation levels as high as x1000 more than other animals, including humans. They have even been brought back alive after spending 10 days in the vacuum of space. Magnification: x100, when printed at 10 centimetres
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Media ID 9246087
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Claw Claws Colored Cryptobiotic Drought Resistant Electron Microscope Extremophile Extremophiles Feet Legs Limb Limbs Meiofauna Micro Organism Micro Organisms Microbiology Microorganism Microorganisms Moss Piglet Mouth Tardigrada Tardigrade Tardigrades Underneath Underside Water Bear Microbiological Waterbear
EDITORS COMMENTS
This print showcases the remarkable water bear, also known as a tardigrade. In this colored scanning electron micrograph (SEM), we are given a close-up view of the underside of this incredible creature. The water bear is a small, segmented micro-animal that resides in moist environments like moss or lichen. What makes these tiny creatures truly extraordinary is their ability to survive extreme conditions. When faced with dryness, they enter a desiccated state called a tun and can endure for many years. This adaptation classifies them as extremophiles, capable of tolerating radiation levels up to 1000 times higher than other animals, including humans. In fact, they have even demonstrated their resilience by surviving 10 days in the vacuum of space and returning alive! Their microscopic size allows them to navigate unseen worlds where they play an essential role in aquatic ecosystems. The magnified image reveals intricate details such as their eight legs with claws and single mouth located on their head. It provides us with an insight into the fascinating biology and structure of these enigmatic creatures. This photograph not only captures the beauty of nature but also highlights the wonders that exist within our own world – reminding us that there is still so much left to discover about Earth's diverse fauna and its hidden marvels beneath our feet.
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