There are 84 species of stony corals found in Hong Kong waters, even more than the species found in the Caribbean.

Are corals animals or plants? Apart from using their tentacles to capture food and attack each other, do they also know how to “lay eggs” to reproduce?

Corals provide habitats for different kinds of marine species. What are the residents of these “houses”? Is it the hermit crabs who like to move around with sea anemones on their backs, the bay lobsters who wear a hard armour, or the frogfishes, the disguised master that can adjust their body color?