Giant Deep-Sea Octopus Devours Jellyfish—And Keeps the Stingers | National Geographic

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Scientists from the Monterey Bay Aquarium Research Institute (MBARI) discovered a rare sight in the deep ocean – a giant octopus eating a jellyfish and possibly using the stingers as a tool. The species, Haliphron atlanticus, is rarely seen alive and most of its life is a mystery to researchers. Females can be up to 13 feet in length and 165 pounds, while the males only grow to about 12 inches. Researchers think the octopus might use the jellyfish’s poisonous stingers as a tool for defense or to capture other prey.
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TIL: Why Do These Monkeys Have Big, Colorful Butts? | Today I Learned

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In this week’s Today I Learned, National Geographic explorer Helle Olsen explains why mandrills have such colorful bums. Turns out the bright red and blue on a male mandrill’s backside really draws the eye – especially the ladies’. Only dominant, top males flaunt such vibrant hues, and female mandrills see them as a badge of fitness.
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