Preliminary investigations have ruled out natural causes of death for the seals.
The male whale may be increasing its reproductive chances by mingling with other populations.
The discovery marks the first known active large predator of its kind in one of the deepest oceanic zones.
Researchers conducted over 300 computer simulations to project when this first ice-free day might occur.
Photograph of orca J27 Blackberry with salmon on head marks first sighting of behavior in nearly 40 years.
Researchers document coordinated attacks targeting sharks' pelvic area to access nutrient-rich organs.
The researchers used an acoustic antenna, a group of hydrophones towed behind a ship, to detect and record ocean sounds from all directions.
The behavior was so quick that the filmmakers had to play back the footage in slow motion to capture the shots of the octopus firing projectiles.
Bajau Laut indigenous traditions face extinction as climate change disrupts their marine way of life.
The anchor was being used for decoration in a house in Muxía, according to Spanish media reports.
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