The Hidden World of Coral Reefs

Did you know that coral reefs are vital to the survival of our ecosystem? And did you also know that reefs can be found as deep as 8000 meters in the ocean? As deep as they are, those reefs are still not immune to the effects of human activities, nor are we outside their sphere of influence. Learn all about these amazing reefs in a new episode of SciShow, hosted by Rose Bear Don't Walk!

Thumbnail credit: NOAA's National Ocean Service
Hosted by: Rose Bear Don't Walk

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[AccidentalNinja]

Just because they don't bleach doesn't mean they can't dye...
I'll show myself out.

[sth.]

How is trawling still legal?? It should not only be banned but fined so astronomically that no fishermen would dare it.

[alisoncircus]

Cold AND very nearly without food - exactly like my fridge.

[flamencoprof]

Fun Fact: In New Zealand's Fiordland area, runoff from the forests is stained with tannins from the leaves (the same substance which gives brewed tea its colour) and the lighter but stained fresh water sits above the sea water. So much light is blocked that black corals grow at depths as shallow as 15 to 50 metres.

[santor]

You failed to mention the problem with dams on rivers. They prevent sediments from reaching the ocean. The sediments would normally neutralize carbonic acid, keeping the Ph of the oceans more stable.

[milkandcookies]

Finaly someone talking at a normal pace in scishow, I can finaly watch it again to get relaxed :)

[jaxoncanseeyou]

Small correction:

The section on aragonite caught my ear as I did a project on it during my masters program in materials engineering. Aragonite isn't a dissolved form of calcium carbonate, it's a morphology of solid calcium carbonate that is precipitated out of solution via biopolymer scaffolding (at least in marine monovalves). I believe the dissolved material is just calcium ions and carbonite ions, it doesn't become aragonite until it solidifies.

Also at 9:10 there is a typo where it's misspelled as "argonite"

Hope this helps!

[robinhahnsopran]

SciShow: *posts this vid*
Me, immediately, in Rick Grimes voice: CORAL!!!!

[TaterKakez]

I don’t know how anyone could dislike Rose, she is amazing and I love the chill delivery. And her subtlety rocking the 1st nation bead work! Love you Rose 🌹 keep up the videos 💜

[nicoles_nook]

I’ve tried to be more mindful of how my consumption affects the environment, so this is very eye opening & helpful! Thank you.

[eCitizen]

This was so very informative. I was not aware of many of the high points of this video. Thank you so much.

[kellenbigman]

Please continue to employ this eloquent speaker. I was easily able to follow along, despite auditory difficulties I face. Thank you for the science!

[skell]

Native American host! Good job sci show! I love seeing my people in these positions ❤

[JimFortune]

She seems to be getting much more comfortable talking to the camera!

[Germankipp]

Ooo ooo ooo do one on the coral reef in the Amazon River delta!

[stax]

I thought Bottom Trawling was illegal internationally. Man I got to do some research.

[TheWizardofLimes]

"Here is an amazing organism that creates natural master structures over tens of thousands of years that humans have never even gotten to witness. And here is how we are absolutely making sure they never are."

[Jop_pop]

I've never gotten used to a new scishow host voice so fast

[lyreparadox]

I just want to say, I've loved every pair of earrings you've worn so far! These are exceptionally lovely!

[maximusherrera]

I really enjoyed learning about coral, and our human impacts on their environments. Thank you queen, for another excellent video.