King crab invasion could threaten Antarctic ecosystems

For tens of millions of years the waters off Antarctica have simply been too cold for king crabs. However, in the last 50 years the water has warmed up 2.5 degrees Fahrenheit (roughly twice the average worldwide rate) making the waters warm enough for king crabs to migrate in. 

The problem? Soft-bodied organisms like starfish, sponges and mollusks are expected to be decimated drastically altering the underwater ecosystem for the worst.