Killer whales prefer to eat only the biggest, juiciest Chinook salmon they can find. The larger the fish, the more energy a whale can get for its meal.
Ecology
Dec 16, 2019
0
235
At 100 feet long and weighing more than 100 tons, blue whales are the largest creatures to have evolved on the planet. Other whales, like killer whales, are larger than most terrestrial animals but pale in comparison to the ...
Plants & Animals
Dec 12, 2019
1
141
Encased in a neon orange plastic shell, a collection of electronic sensors bobbed along the surface of the Monterey Bay, waiting to be retrieved by Stanford University researchers. A lunchbox-sized speck in the vast waters, ...
Plants & Animals
Nov 25, 2019
1
1098
Cetaceans, the group including whales and dolphins, originated in south Asia more than 50 million years ago from a small, four-legged, hoofed ancestor. Now, researchers reporting the discovery of an ancient four-legged whale—found ...
Archaeology
Apr 4, 2019
0
2981
Barnacles that hitch rides on the backs of humpback and gray whales not only record details about the whales' yearly travels, they also retain this information after they become fossilized, helping scientists reconstruct ...
Ecology
Mar 25, 2019
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239
Blue whales reach their massive size by relying on their exceptional memories to find historically productive feeding sites rather than responding in real time to emerging prey patches, a new study concludes.
Ecology
Feb 25, 2019
0
77
Spring is the time of year when birds are singing throughout the Northern Hemisphere. Far to the north, beneath the ice, another lesser-known concert season in the natural world is just coming to an end.
Plants & Animals
Apr 3, 2018
0
860
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 ...
Plants & Animals
Dec 7, 2017
0
102
A team of scientists that used motion-sensing tags to track the movements of more than five dozen blue whales off the California coast discovered that most have a lateralization bias - in other words, they essentially are ...
Plants & Animals
Nov 20, 2017
0
149
A combined team of researchers from Marine Ecology and Telemetry Research and the U.S. Navy's Naval Undersea Warfare Center Division has found evidence of whales diving deeper and longer than normal when exposed to sonar ...
