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Book 6, Question 91 · Video

Why Do Mangroves Grow in Salt Water?

Video · 2:00 · Crafty Clover explains, from A Million Whys Book 6

Mangroves are special trees that grow in salty mud along tropical shores. Some of their roots poke up like snorkels to get air. Some can also get rid of extra salt, so they can liv

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What Crafty Clover says in this video

Intro

Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do mangroves grow in salt water?

The Big Idea

Mangroves are special trees that grow in salty mud along tropical shores. Some of their roots poke up like snorkels to get air. Some can also get rid of extra salt, so they can live where most trees would wilt!

Tide Soaks the Mud

Step one: the tide soaks the mud. Mangroves grow where the tide floods the shore, usually twice a day. The mud is salty and has very little air.

Snorkel Roots Grab Air

Step two: snorkel roots grab air. Some mangroves have roots that stick up out of the mud like snorkels. They let the roots breathe even when the mud is soaked.

Salt Gets Dumped

Step three: extra salt gets dumped. Many mangroves block most of the salt at their roots, and some leaves push out the rest. You can even find salt crystals on the leaves!

A Closer Look

Let's take a closer look at a mangrove tree! The snorkel roots poke up to get air. The salt-dumping leaf gets rid of extra salt. And a seedling floats away to start a new tree. A mangrove is a tree with a salt-water toolkit!

Quick Facts

Quick facts! Tangled mangrove roots are nurseries for baby fish. Mangrove forests also shield coasts from storm waves. Mangrove seedlings can float in the sea for weeks before they settle down. Mangrove roots are living and sharp, so walk only on marked boardwalks with a grown-up.

Think Like a Scientist

Now, think like a scientist! Let's think about roots. Why do some roots poke up into the air? What two jobs do the tangled roots do? Stir salt into water, and taste a tiny drop with a grown-up. Could a normal plant drink this? Remember, stay on marked paths.

Outro

A mangrove is a tree with a salt-water toolkit. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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