"Balls of moss commonly found in aquariums are threatening to push the zebra mussel invasion further across the U.S., wildlife officials are warning. Contaminated moss balls have been found in pet stores in 21 states in recent weeks, and both officials and the pet supply industry are scrambling to contain the problem before it’s too late."

"Each year the amount of plastic swirling in ocean gyres and surfing the tide toward coastal beaches seems to increase. So too does the amount of plastic particles being consumed by fish — including species that help feed billions of people around the world."

"Skipjack are the world’s most abundant tuna. They’re resilient, but can they outswim our demand for this pantry staple?"

"One startup in Maine has a vision that is drawing attention from scientists and venture capitalists alike: to bury massive amounts of seaweed at the bottom of the ocean, where it will lock away carbon for thousands of years."

"Indian fishing platforms cling precariously to the rocks, part of a way of life on the Columbia River persisting for more than 10,000 years."

"The change in the main ocean heat pump could bring more heat waves to Europe, increase sea level rise in North America and force fish to move farther north."

"When mackerel started showing up in Iceland, it started a decade-long fight over how to divide the ocean’s riches."

"Freshwater fish are under threat, with as many as a third of global populations in danger of extinction, according to an assessment."

"The U.S. Supreme Court appears hesitant to side with Florida in a bitter water dispute that pits state’s oystermen against Georgia farmers."