Giant red king crabs : More than 60 years ago, Soviet scientists introduced red king crabs into the Barents Sea with one goal: to create a reliable new seafood resource. The plan worked, but researchers say it also changed parts of the Barents Sea ecosystem, as per a report.
Today, the species supports a valuable commercial fishery in Russian and Norwegian waters. At the same time, scientists say it has altered seafloor communities as it feeds.
