Heather Angel / Channelled apple snail (Pomacea canaliculata) laid on Water hyacinth (Eichhornia crassipes) leaves, both invasive species, native to South America. Yangshuo, Guangxi Zhuang Autonomous Region, China.
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Alex Mustard / RF - Emperor shrimp (Periclimenes imperator / Zenopontonia rex) exploring alien-looking landscape of host sea cucumber (Bohadschia argus). Emperor shrimps are commensals on many hosts, including sever...
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Doug Wechsler / Horseshoe crab (Limulus polyphemus) embryos, Delaware Bay, New Jersey, USA, June.
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Alex Hyde / Cockchafer beetle (Melolontha melolontha) male with antennae fans spread. Peak District National Park, Derbyshire, UK. May.
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Juergen Freund / Toilet door with alien mural at Wycliffe Well UFO capital of Australia along the Stuart Highway,Northern Territory, Australia.
