| A | B |
|---|
| tropical | very hot and humid |
| currents | a steady flow of water in one direction |
| warm | moderately or comfortably hot |
| coral | a marine organism that lives in colonies and has an external skeleton |
| polyps | an aquatic invertebrate, with a tubular body and a mouth surrounded by tentacles |
| secrete | to produce and discharge a substance |
| limestone | a rock formed from animal remains |
| colonies | a group of animals living together who depend upon each other |
| reefs | a ridge of coral or rock just under the water |
| tentacles | a long flexible arm around the mouth of an animal and used for feeding |
| cay | small low island or reef in the sea, made of coral or sand |
| skeletons | bones or external framework |
| depth | how deep something is |
| oceans | large expanse of salt water |
| coast | land beside the sea |
| channel | wide passage of water between an island and land |
| harbour | place where ships ca anchor safely |
| marine | relating to, found in or living in the sea |
| swimming | to move through the water for fun |
| surface | upper part, top of |
