Tour guide and professional diver Julio Cesar Castro joined forces with other volunteers to rescue a humpback whale on Monday (July 29) which was trapped in a fishing net near El Nuro beach off the Peruvian coast.
Wildlife photographer Chase Dekker captured a sea lion falling into the mouth of a humpback whale in what he calls a "once-in-a-lifetime" moment.
Japan has resumed whale hunting after pulling out of an international moratorium - but which countries will it be joining?
Japan is to resume commercial whaling in July after leaving the International Whaling Commission
"At 5 to 10 feet, there's no chance to even try to maneuver the vessel," the director of operations for the Washington state ferries system said.
All the most inspiring content on sustainability issues from around the web last week.
The 41-foot-long adult female was spotted Monday at Ocean Beach and would have been hit by a ship.
Harnessing the power of the sea: A beluga whale found with a Russian-made harness has raised the alarm of Norwegian officials amid speculation the animal may have escaped from a Russian military facility.
Russia's 'whale jail' set to close after international outcry
Pictures of mammals being held in cramped conditions in Russia have prompted outrage worldwide.
Pressure is growing on Moscow to release 11 killer whales and 87 belugas from small pens in the far east of the country.
The whale’s stomach had a mixture of garbage bags, plastic bags, fishing nets, plates, tubes, and a bag of a washing machine liquid.
The body of a grey whale drew crowds and on-lookers on a beach in Malibu, California on Sunday.
16 rice sacks, 4 banana bags and multiple shopping bags were found during an autopsy of a young male Cuvier’s beaked whale that washed up on a beach in the Philippines
They don't look like other killer whales, and they don't eat like them, either, scientists say of the species discovered near South America.
The government announced on Wednesday that they would withdraw from the International Whaling Commission and commercial whaling in its territorial waters would resume in July 2019.
Here is our pick of the best No Comment videos from the last seven days.
A two-day rescue effort in Argentina was successful in returning a humpback whale stranded on a beach back out to sea.
PCBs have been banned for decades, but they still have harmful effects on the ocean, putting half of the world’s orca population in danger.
A beluga whale spotted in the River Thames just outside London is probably the furthest south one of the creatures has been seen in the UK, according to ecologist Michael Hoit
South Australian Museum staff remove most of the flesh by hand, before allowing the skeleton to undergo maceration in tanks to remove remaining meat which may take several months.
Nations on either side of the whale hunting debate are set for a standoff as the International Whaling Commission (IWC) meets Monday, with Japan hoping to overturn the 32-year-old ban on commercial whale hunting.
The video shows a stranded orca returning to the sea in Nueva Atlantis, Argentina
Humpbacked whales can weigh up to 30 tonnes, with this whale creating quite a splash.
The Chilean Navy has freed a whale after it became trapped in a fishing net in the waters off the country's coast.