September 19, 2014; 5:18 AM ET
Chicago is facing a mostly clear weekend with the threat of some disruptive thunderstorms on Saturday. more >
Sharks exposed to ocean water acidified by too much carbon dioxide alter their behavior, swimming in longer spurts than sharks in typical ocean water, particularly during their nighttime wanderings.
The Arabian Sea is now more likely to glow emerald green instead of sapphire blue in winter because its food chain is out of whack, researchers reported on Sept. 9.
The last frontier of the national parks lies underwater.
In an unexpected discovery, hundreds of gas plumes bubbling up from the seafloor were spotted during a sweeping survey of the U.S. Atlantic Coast.
Safety is a top priority when using severe storms to propel epic watersport outings.