A new critter is creeping into the United States' waters. The invasive Australian redclaw crayfish has been spotted in southern Texas, roughly 8,000 miles from its home. The freshwater crustacean ...

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. ... The nearly 6-millimeter-long crustaceans are considered giants of their kind.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.

A tiny crustacean that is considered “giant” was discovered as a new species in Totem Pole Cave in Australia. It has claws and teeth.