1) How dolphins communicate with sounds? 2) How octopuses use camouflage? 3) The fastest swimmers in the ocean. 4) Coral reefs — the “cities” of the sea. 5) Why sharks are important for the ocean? 6) The food chain in the ocean. 7) How seaweed and plankton help the Earth? 8) How sailors explore the oceans? 9) Sea legends and myths (mermaids, krakens, etc.). 10) Why we should protect coral reefs 11) Ways we can protect sea animals 12) The weirdest sea creatures.

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