More than 400 whales have died on a beach in New Zealand.
Japan is once again allegedly killing whales in Antarctica. But after taking Japan to international court in 2014, there's not much Australia can do.
Size doesn't always matter when it comes to the pitch of your voice, especially if you're an aquatic mammal.
Songs of marine animals can help us discover new populations.
Dolphin-watching tourism has pros and cons — so what should you think about next time you head out?
The largest animals on the planet - the baleen whales - prey on some of the smallest. But how did their teeth evolve into the filters they use today?
Ships in Australian waters are getting bigger and more numerous all the time. We need a plan to help them avoid crashing into whales and other large sea creatures.
Poor management of the oceans, including the killing of crucial marine predators, could result in more greenhouse gasses.
The increasing use of the sea for human activities has resulted in a dramatic rise in noise levels.
We tend to think of the oceans as quiet, when in fact they're anything but. Noise is the "forgotten pollutant", but the good news is that unlike many other pollutants it can be switched off if we try.
Humpback whales have been spotted fending off killer whales from attacking other species. But this kind of interspecies altruism raises an evolutionary conundrum.
What are the oldest living animals on the planet?
Understanding this will boost conservation efforts.
Globally, a quarter of whale and dolphin species are endangered. Though South African dolphin populations are generally in good heath, the humpback dolphin is cause for concern.
Highly prized and extremely rare, it's hard to tell if you've stumbled on this piece of sperm whale 'product'.
Antarctica's blue whales all feed in the same place. But a new genetic analysis suggests they are actually three separate populations that breed in different parts of the globe.
It didn't turn out well for the whale who went to Westminster, but others have made a happy home in British waters.
The tale of the vengeful whale that took out the Essex, a whaling-ship, has now been adapted in true swashbuckling style.
The clash between Australia and Japan over whaling is undermining science-based environmental law.
Japan's whaling fleet will leave port today to resume whaling in the Southern Ocean as part of its new scientific program, NEWREP-A.