"Poison cannot be ruled out as the cause of a mass die-off of fish in the Oder river but tests so far have not proven toxic substances were to blame, Polish Environment Minister Anna Moskwa said on Sunday."

"Some of the country’s most powerful scientific advisers want regulators to take a closer look at the risks sunscreen products pose for aquatic environments."

"The amount of coral in some areas of the Great Barrier Reef is at its highest in 36 years, according to a new report from the Australian Institute of Marine Science."

"Near-record amounts of seaweed are smothering Caribbean coasts from Puerto Rico to Barbados, killing fish and other wildlife, choking tourism and releasing stinky, noxious gases."

"On a recent, scorching afternoon in Albuquerque, off-road vehicles cruised up and down a stretch of dry riverbed where normally the Rio Grande flows. The drivers weren’t thrill-seekers, but biologists hoping to save as many endangered fish as they could before the sun turned shrinking pools of water into dust."

"A spate of recent criminal indictments highlights how U.S. companies, taking advantage of a patchwork of federal and state laws, are supplying a market for fins that activists say is as reprehensible as the now-illegal trade in elephant ivory once was."

"Sliding off the side of her small boat, seabird biologist Bonnie Slaton wades through waist-high water, brown pelicans soaring overhead, until she reaches the shores of Raccoon Island.'

"The federal government is conducting a review of four dams on a Maine river that could result in a lifeline for the last wild Atlantic salmon in the U.S."