Whales were happier during the COVID pandemic when humans weren't around, scientists find
Scientists find eastern Australian humpback whales benefited from a reduction in human activity on the ocean during the first year of the pandemic, recording lower levels of the stress hormone cortisol.
Famous orca Split Fin excites South Coast residents by returning with new family member
With distinctive characteristics, Split Fin and Bent Tip are part of an orca family that has thrilled South Coast residents since being spotted more than 20 years ago.
Paddle boarders risk $30k fine to free humpback whale trapped in shark net
The group says it reported the distressed whale in waters off the Sunshine Coast to authorities but when no-one had arrived almost an hour later, they took action fearing it was "drowning".
Rescuers free humpback whale tangled in 800kg of ropes, buoys it may have towed from Antarctica
A distressed humpback whale tangled in a huge mass of fishing equipment has been freed after a major rescue effort off the Gippsland coast in Victoria.
Beluga whales saved from bombing in Ukraine in 'the most complex marine mammal rescue ever'
Two beluga whales faced a gruelling journey across Ukraine's war-ravaged region of Kharkiv to reach their new home in Spain.
128 fin whales will be killed and hunted in Iceland this year
Animal rights activists have described the decision to kill 128 fin whales as inhumane after the Iceland government issued a licence to a fin whaling company.
Humpback whale entangled in fishing rope off NSW coast as marine crews on standby for multiple rescues
Marine rescue authorities are searching waters near Port Macquarie for the whale, which is the fourth to have been entangled off the northern NSW coast this holiday weekend.
Whale spotted in Tweed River for start of migration season
Whales have been spotted in New South Wales' Tweed River as whales begin their northern migration to warmer waters.
Fresh calls for shark nets' removal after humpback whale tangled up off Queensland coast
Environmental advocates renew calls for the state to remove shark nets during whale migration season after a humpback is freed from a tangle off the Sunshine Coast.
Fears for sick humpback as whales start to arrive in South Australia
Tourists and locals were thrilled to see a humpback whale close to the shoreline at Victor Harbor last weekend but a marine biologist says the animal was very unwell and may have been injured.
Orcas have sunk another boat off European coast. Baffled scientists think they may know why
A group of at least 15 orcas off the coast of Spain have sunk seven boats over the past four years. The origin of this new behaviour has baffled scientists, though the leading theory suggests they're following a "social fad".
Japan proposes to start hunting fin whales, reigniting debate over whale meat and cultural traditions
Japan proposes a plan to allow the hunting of large fin whales around its coast, sparking backlash from environmental groups.
Scientists baffled by pilot whale strandings as public desperate for answers
Two weeks have passed since the latest mass stranding event in Western Australia in which 31 pilot whales died, but marine experts want to see the conversation around these events change.
Sighting of first orca calf at Ningaloo Reef in years gives hope to researchers
Having waited years for a new calf at Ningaloo Reef, researchers say the sight of a new baby killer whale is especially good news after several calves were lost on WA's northern coast.
Orcas arrive at Ningaloo Reef
Pods of orcas are arriving at the Ningaloo Reef for winter, including the first calf seen in the area in three years.
Antarctic blue whales are the largest animals on the planet but tricky to find
Scientists have undertaken seven voyages totalling more than 100,000 kilometres and eight months at sea to build the most up-to-date snapshot of Antarctic blue whale distribution.
Blue whales heard 'everywhere' in signs of population recovery
Dr Brian Miller says his research team is detecting traces of blue whales around their historical feeding ground more often.
Australia's elusive killer whales better understood, thanks to citizen scientists
For three decades, the public has been helping scientists log sightings of killer whales along Australia's south-east coast, providing vital data for research into the apex predators.
Death of pygmy whale, two dolphins unrelated to seismic survey, SA Water says
A former senator and a Greens politician want answers after a whale and two dolphins died three days after SA Water completed a seismic survey at Port Lincoln.
Skeleton of famous whale-hunting Orca 'Old Tom' reassembled for new museum display
The orca known for working alongside human whalers has been given a "lively" new exhibit that museum curators hope pays better homage to its legacy.
Eden Killer Whale Museum reassembles skeleton of famous orca 'Old Tom' for new display
A skeleton of a famous orca known as "Old Tom" has been given a new look, with a south coast museum sprucing up the display, through a painstaking operation.
A mass stranding of whales on a WA beach ended better than many feared, but the danger has not passed
Authorities are monitoring pods of whales off WA's south-west coast to ensure they do not return to the beach, after most of those involved in a mass stranding at Geographe Bay near Dunsborough swam back out to sea.
More than 20 whales dead in WA beaching event
The Department of Biodiversity, Conservation and Attractions (DBCA) says 26 whales have died in a beaching event which stranded more than 100 animals.
More than 300 whales stranded at a WA beach in 1996
Western Australia's largest mass whale stranding event occurred in 1996 at Dunsborough, and involved 320 animals.
Up to 100 whales have stranded at a beach in WA's south. (ABC News: Anna-Lise Murch)
Authorities are rushing to save between 50 and 100 whales stranded at a beach in Dunsborough in WA's south-west.