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New algorithm recognizes distinct dolphin clicks in underwater recordings

Thu, 07 Dec 2017 14:17:46 EST ~ Scientists have developed a new algorithm that can identify distinct dolphin click patterns among millions of clicks in recordings of wild dolphins. This approach could potentially help distinguish between dolphin species in the wild. Find out more...

Heart monitors on wild narwhals reveal alarming responses to stress

Thu, 07 Dec 2017 14:17:26 EST ~ Stress from human disturbances could cause behavioral responses in narwhals that are inconsistent with their physiological capacities, researchers say. They found that narwhals released after entanglement in nets and outfitted with heart monitors performed a series of deep dives, swimming hard to escape, while their heart rates dropped to unexpectedly low levels of three to four beats per minute. Find out more...

It's all in the ears: Inner ears of extinct sea monsters mirror those of today's animals

Thu, 07 Dec 2017 14:16:14 EST ~ A new study has revealed that an extinct group of marine reptiles called sauropterygians evolved similar inner ear proportions to those of some modern day aquatic reptiles and mammals. Find out more...

Feces from entangled North Atlantic right whales reveals 'sky-high' stress levels

Thu, 30 Nov 2017 09:00:52 EST ~ North Atlantic right whale scientists found that whales who undergo prolonged entanglements in fishing gear endure 'sky-high hormone levels,' indicating severe stress, which researchers discovered using a pioneering technique of examining scat from live, entangled, and dead whales over 15 years. Find out more...

The enigmatic endangered whale shark: 22-year-long global citizen science project sheds light on these animals

Wed, 29 Nov 2017 13:14:42 EST ~ Vital scientific information about whale shark behavior, biology and ecology is being uncovered by an unlikely source -- ecotourists and other citizens. Thanks to modern advancements in technology and the burgeoning field of 'citizen science,' new information about gregarious and mysterious whale sharks is being revealed in a study. Find out more...

Bowhead whales come to Cumberland Sound in Nunavut to exfoliate

Wed, 22 Nov 2017 15:10:41 EST ~ Aerial drone footage of bowhead whales in Canada's Arctic has revealed that the large mammals molt and use rocks to rub off dead skin. Find out more...

Righty blue whales sometimes act like lefties, study finds

Mon, 20 Nov 2017 12:09:43 EST ~ To support their hulking bodies, blue whales use various acrobatic maneuvers to scoop up many individually tiny prey, filtering the water back out through massive baleen plates. In most cases, the whales roll to the right as they capture their prey, just as most people are right-handed. But, researchers now show that the whales shift directions and roll left when performing 360 barrel rolls in shallow water. Find out more...

Recovery of West Coast marine mammals boosts consumption of chinook salmon

Mon, 20 Nov 2017 08:54:19 EST ~ The researchers estimate that from 1975 to 2015, the yearly biomass of chinook salmon consumed by pinnipeds (sea lions and harbor seals) and killer whales increased from 6,100 to 15,200 metric tons, and from five to 31.5 million individual salmon. Find out more...

Shifting presence of North Atlantic right whales tracked with passive acoustics

Wed, 15 Nov 2017 10:48:37 EST ~ A new study confirms what marine mammal researchers have suspected for a while: right whales use nearly the entire eastern seaboard during the winter, and they move around a lot more than was previously thought. How long they spend in some areas of their range has also changed in recent years. Find out more...

Right whales, already an endangered species, may face a dim future

Mon, 30 Oct 2017 15:44:41 EDT ~ Researchers show that right whales, already an endangered species, may face a dim future. Find out more...