NEWS NOAA Fisheries Public Affairs The waters of Whiting Harbor near Sitka, Alaska are icy this February morning, but "ROVer" doesn't even shiver while being lowered into it. ROVer is on a mission to find an invasive sea squirt known as "rock vomit."

State, feds team up to fight 'rock vomit' threat to Alaska fisheries

Close-up of Didemnum vexilim, or
Close-up of Didemnum vexilim, or "rock vomit" (photo courtesy Alaska Department of Fish and Game).
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