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todayilearned

Jan 18, 2020

TIL only four people have been at the bottom of the Mariana Trench, called the Challenger Deep (about 11000 meters or 36000ft down). For reference, 12 people have walked on the Moon.

bbc bbc news bottom of the ocean deepest place on earth dive diving mariana trench news ocean sea

todayilearned

Nov 30, 2019

TIL whenever a hermit crab finds a shell too big for itself it'll wait until a queue forms and an individual that fits the shell is found. Then an exchange will occur - smaller crabs will move to newly emptied shells.

amazing crabs shell exchange animals bbc bbc earth crab crabs crabs shell exchange david attenborough exchange shell hermit crab hermit crab changing shells hermit crabs life story natural history nature ocean sea sea shell shell exchange shell size shells swap shell wild wildlife

todayilearned

Aug 26, 2019

TIL Sperm whales are the loudest animal on the planet, sperm whales uses echolocation and vocalization as loud as 236 decibels

02014 animal communication animals author citizen science clicking clicks communication conversations at the interval deep deep book diving freediving long now long now foundation mammals ocean ocean exploration san francisco sea sea life sf sperm whales the interval the interval at long now whales

todayilearned

Apr 08, 2019

TIL that the clicking noise sperm whales use to communicate is so loud that it can be heard by other whales thousands of miles away and can make a human body intensely vibrate to the point of death.

02014 animal communication animals author citizen science clicking clicks communication conversations at the interval deep deep book diving freediving long now long now foundation mammals ocean ocean exploration san francisco sea sea life sf sperm whales the interval the interval at long now whales

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