Soviet scientists released red king crabs into the Barents Sea in the 1960s to build a new fishing industry, but decades later, the giant crabs have spread across Russian and Norwegian waters, altering seafloor communities as they feed on native marine life

The red king crab can grow to more than one metre across and has a heavy, spiked shell. Seafood markets value the crab as a high-priced delicacy.

Raccontata datimesofindia.indiatimes.com