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Photographs: © tbkmedia.de/Alamy (tiger eel); © Mark Conlin/Alamy (cowfish); Chris Newbert/Minden Pictures/National Geographic Image Collection (hermit crab); © Gary Bell/OceanwideImages.com (anemone fish); © Gary Bell/OceanwideImages.com (sea slugs); © Stephen Frink/Getty Images (angelfish); © Rudie Kuiter/OceanwideImages.com (blue-ringed octopus); David McKee/Shutterstock (lionfish); © Stephen Frink Collection/Alamy (coleman shrimp)
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