A group of islands hanging out together like a team of beach buddies.

Why it matters: Archipelagos create safe spots for sea life, with lagoons, reefs, and fishing grounds.

Fun fact: Indonesia has over 17,000 islands in its archipelago!

Say it like this: ahr-kuh-PEL-uh-go

Your turn: Can you imagine living on your own tiny island? What would you put there?

Do you want to know more? Read Sophia's article about the amazing Bajau people that live on the Indonesian islands.

A place where people care for fish and other water animals in clear tanks that copy their real homes, like reefs, kelp forests, rivers, or mangroves.

Why it matters: Good aquariums teach us how to protect the ocean, rescue and rehab injured animals, and sometimes raise threatened species. Seeing sea life up close helps kids (and grown-ups!) fall in love with nature.

Fun fact: Jellyfish often live in special round “kreisel” tanks with gentle water flow so they don’t bump into corners.

Say it like this: uh-KWAIR-ee-um

Activity twist: Design a Dream Tank! Pick a habitat (reef, kelp, mangrove). Draw a tank with hiding places, a clean-water filter, and a no-tapping sign. Add 3 animals and write one care tip for each (food, light, temperature).

Do you want to know more? Read Teresa's story about the woman who invented the aquarium.