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- Hey there and welcome to Life Noggin.
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- Have you ever wondered if Atlantis is real?
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- Is there really a lost city in the sea?
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- Well, if it does exist, we haven't found it
- yet...but there are underwater cities filled
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- with beautiful fish, lively vegetation and
- wondrous sea creatures!
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- They’re called coral reefs and they are
- extremely important.
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- Let’s explore these amazing ecosystems and
- learn why we need to protect them!
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- Milo Thatch would be proud.
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- So just what exactly are coral reefs?
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- Called the “rainforests of the sea”, coral
- reefs are slowly formed when coral polyps
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- secrete a calcium carbonate skeleton, which
- protects the coral from predators and gives
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- other coral polyps a place to attach themselves.
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- The largest coral reef is the Great Barrier
- Reef, which spans over 2,600 kilometers and
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- has been growing for about 20,000 years!
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- The reefs are some of the most diverse ecosystems
- on Earth and home to countless sea creatures
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- from tropical fish to sea cucumbers to dolphins.
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- Scientists even predict there could be millions
- of undiscovered species of organisms living
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- in and around the reefs.
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- Not to mention, without them, we wouldn’t
- have had those awesome adventures with Nemo
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- and Dory!
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- 00:01:06,480 --> 00:01:08,290
- So why are they so important?
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- Besides their awesome aquatic life, coral
- reefs play a big role in protecting shorelines
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- around the world from coastal storms and erosion.
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- Parts of the reef even act as natural water
- filtration systems.
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- Through fisheries, the reefs provide many
- people with an important source of protein
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- and nutrition, especially in developing countries.
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- This also makes them extremely important economically,
- even more when considering tourism of the
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- reefs are great stimulants of their local
- economies.
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- Experts estimate that coral reefs are worth
- hundreds of billions of dollars!
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- Due to their vast biodiversity, coral reefs
- also have the potential to lead to countless
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- life-saving advancements in medicine, possibly
- helping us find better treatments or cures
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- for things like arthritis, viruses, or even
- cancer.
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- Who needs Atlantis when coral reefs are so
- amazing!
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- But coral reefs around the globe are in danger.
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- They’re fragile ecosystems that are very
- sensitive to the increasing water temperatures
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- from climate change.
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- As greenhouse gases warm the atmosphere, the
- temperatures of the sea also increase, which
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- leads to coral bleaching.
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- This is an unfortunate phenomenon where the
- coral lose their symbiotic algae that produce
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- the food the coral need to survive.
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- This can leave the coral reefs vulnerable
- to other threats and diseases and even kill
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- the coral colonies from starvation.
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- The reefs can sometimes recover from short-term
- bleaching, but prolonged bleaching can lead
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- to irreversible damage and death.
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- Increasing carbon dioxide also alters the
- chemistry of the ocean and leads to ocean
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- acidification, where the more acidic water
- slows coral growth rates and weakens their
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- skeletons.
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- Coral reefs also face many other threats including
- pollution, overfishing, and overharvesting
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- coral.
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- It’s estimated that if left unchecked, over
- 90% of all coral reefs will be severely threatened
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- by 2030, with almost all of them being in
- great danger by 2050.
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- Come on friends, we have to save Atlantis!
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- Protecting coral reefs is just one of the
- many reasons we should all help fight global
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- warming.
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- Share this video with your friends so we can
- help out our ocean buddies!
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- Let me know in the comment section below what’s
- your favorite part about coral reefs.
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- Make sure you come back every Monday for a
- brand new video.
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- As always, I’m Blocko and this has been
- Life Noggin.
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- Don’t forget to keep on thinking!
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