Yahoo! News has this story about a warning from NOAA that lionfish (Pterois volitans/miles complex) populations are on the rise along the east coast of the U.S. Initial reports of the species in northern Atlantic waters over the last few years were suprising to many who assumed that these tropical, stinging beauties could not survive in cooler waters. NOAA researchers will be out in the Atlantic Ocean this summer determining the extent of lionfish distribution and abundance. You can read the official press release here, or get the full report here (.pdf).