Trilobites try to hide from predator Opabinia.

ANIMAL THEMES • ANIMAL • ANIMALS HUNTING • ANIMALS IN THE WILD • AQUATIC • ARTHROPOD • ARTHROPODA • ARTHROPODS • ARTWORK • BIOLOGY • BOTTOM FEEDERS • BURGESS SHALE FORMATION • CAMBRIAN • CARNIVORE • COLOR IMAGE • COLOUR IMAGE • CREATURE • DANGER • DAY • DETRITIVORE • DIGITALLY GENERATED IMAGE • ECOLOGY • ECOSYSTEM • ENVIRONMENT • EVOLUTION • EXTINCT • FISH • FLEET • HABITAT • HIDING • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • INVERTEBRATE • LATERAL VIEW • MARINE BIOLOGY • MARINE • MENACE • MESOZOIC ERA • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NATURE • NAVY • NO PEOPLE • OCEAN FLOOR • OCEAN LIFE • OCEAN • OCEANS • OPABINIA REGALIS • OPABINIA • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEOECOLOGY • PALEONTOLOGY • PALEOZOIC ERA • PALEOZOOLOGY • PAST • PERIL • PRECAMBRIAN • PREDATOR • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • PROBOSCIS • SCAVENGER • SCIENCE • SCIENCE: EVOLUTION • SEA LIFE • SEA • SEA. • SEARCHING • SEAS • SIDE VIEW • STROMATOLITE • SWIMMING • THREAT • TRILOBITE • UGLINESS • UNDERSEA • UNDERWATER • VERTEBRATE • WATER • WILDERNESS • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY