A group of approximately 10 dolphins was spotted swimming close to the water's surface by the Israeli-Egyptian border.
A study found man-made noise could increase the risk of mother whales being separated from their calves since their normal vocalizations are quiet.
Sea butterflies are not known to sting or harm humans.
Known as Shonisaurus popularis, the species resembled a chunky dolphin that grew to at least 15.2 meters long and died in large numbers at one particular site some 230 million years ago.
The concentrated population of manta rays is also likely to be extended toward the coast of Peru, which borders Ecuador.
The Chatham Island stranding occurred on Saturday, and also involved surviving pilot whales being euthanized.
The great big ocean is still 80% unexplored, but new scientific studies may help us understand and explore more of it.
After monitoring an electronically tagged narwhal for 83 days, researchers noticed irregular diving and surface resting behavior.
Bathynomus, a group of isopods that live in the deepest parts of the ocean, is distantly related to decapods, such as shrimp, crabs and lobsters.
They include types of sponges, starfish and coral, discovered between Hawaii and Mexico.
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