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9 Cool Facts About Starfish

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9 Cool Facts About Starfish

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Featured Image Credit: lisapote.com

The Starfish – or Sea Star – may be one of the most beautiful creatures in the ocean.

They’re fascinating beings to only be a little larger than a tea cup. Let’s check out some facts about the starfish you may not know.

1. They have no brain and no blood.

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Photo credit: wikipedia.com

Starfish use filtered sea water to pump nutrients through their nervous system.

2. They can be really heavy.

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Photo credit: wikipedia.com

At least for something of their small size, sea stars can weigh up to 11 pounds.

3. They have a lot of birthdays!

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Photo credit: wikipedia.com

The average lifespan of a sea star is 35 years.

4. A Starfish in not a fish.

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Photo credit: wikipedia.com

They’re actually related to sand dollars and sea urchins.

5. There are around 2,000 species of sea star.

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Photo credit: wikipedia.com

They live in cold and warm climates all over the world.

6. They usually have five arms.

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Photo credit: wikipedia.com

There is a group of less common species that have more than five!

7. They cannot survive in fresh water.

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Photo credit: wikipedia.com

All salt. All the time.

8. They can regenerate.

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Photo credit: wikipedia.com

But its takes a while. It can take u to a year for a lost limb to grow back.

9. They eat inside out.

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Photo credit: wikipedia.com

When they capture prey, they have tiny suction cups to grab ahold of their food. Then their stomach exits their mouth to digest the food, and reenters the body when they’re done eating.

Sounds like a horror movie right? Close, but they look more majestic than creepy.

Learn more from National Geographic.

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