Sea anemones at low tide
Please be respectful of all the living creatures (like these anemones) that you can find on the beach
and if you are out enjoying low tide, please remember to physical distance.


We’re closing out Tide Pool Week with some beautiful, summery weather—the perfect time to head to a local beach and explore some of the amazing animals we’ve been highlighting! Check out our library of animal fact sheets for more details about the birds, fish and invertebrates you might see on your next trip to the beach. And, before you tackle our trivia below, you might want to take a close look at the fact sheets for tide pool ecosystems, barnacles and moon jellies (just saying!).

And, so you know exactly what you’re discovering when you head to the shore, we’re happy to announce that our pocket beach guides are now available for download on our website! They’re packed with fascinating facts, and have pictures that will help you identify the animals you find as you explore.


Have you been following along this week? Test your knowledge with our trivia below—then challenge your friends to see if they can beat your score!

  1. An invertebrate is:
    A. An animal without lungs.
    B. An animal without a backbone.
    C. An animal without a circulatory system.
    D. An animal that squirts ink.
  2. What do you call a group of jellyfish?
    A. A jam
    B. A blub
    C. A smack
    D. A jiggle
  3. How do anemones reproduce?
    A. By splitting themselves in half.
    B. By broadcasting spawning.
    C. Both.
  4. Which of the following animals are cnidarians?
    A. Jellyfish
    B. Anemones
    C. Corals
    D. All of the above.
  5. Which of the following animals are crustaceans?
    A. Crabs
    B. Shrimp
    C. Barnacles
    D. All of the above.
  6. How many arms can a sunflower sea star have?
    A. 5
    B. 18
    C. 24
    D. 38
  7. True or false? Sand dollars and sea urchins are related.
  8. When it comes to their role in the ocean, sea cucumbers function a lot like which type of machine?
    A. Vacuum cleaner
    B. Blender
    C. Computer
    D. All of the above
  9. How do sea urchins (and sea stars) move?
    A. They don’t.
    B. They glide like slugs.
    C. They use their muscles.
    D. They push water through their tube feet.
  10. True or false? Sea stars digest their food outside of their bodies.


Here’s a sampling of activities you can enjoy on your own—check our website for more!

  • Learn all about sea urchins, then grab your art supplies to make one out of clay with our activity sheet. Double the fun with our crabs activity sheet!
  • Check out our YouTube channel for an amazing assortment of videos.
  • Break out the markers, crayons or colored pencils and get creative with our barnacle, clam and Dungeness crab coloring sheets—plus many more on our website.
  • Find the hidden litter in the tide pool with our activity sheet.
  • Visit a virtual tide pool and see if you can spot the differences in the pictures.

PS: Looking for more? Explore our animal fact sheets and infographic library, or check in on our animals in real time with our live webcams.


Tide Pool Week was the last of our weekly themes, but never fear: We’ll still be bringing you content galore on our website, blog and social media—follow us on Facebook, Instagram and Twitter to see all your favorite Aquarium animals and be among the first to know when we’re able to set a reopening date. We can’t wait to welcome you back!

Trivia answers:

  1. B.
  2. C.
  3. C.
  4. D. Cnidarians are defined by having stinging cells.
  5. D.
  6. C. Most sea stars have five arms, including juvenile sunflower stars, but by the time they’re adults, sunflower stars can have up to 24 arms.
  7. True. Both are members of the echinoderm family, which also includes sea cucumbers and sea stars.
  8. A. Using their feeding tentacles, sea cucumbers “vacuum” the sea floor and eat any leftovers (algae, fish poop and more) that they find there.
  9. D.
  10. True. Because their mouths are so small, sea stars push their stomachs out of their mouths to surround their food and slowly digest it outside of their bodies.



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