Reef Corals of the Indo-Malayan Seas
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Reef Corals of the Indo-Malayan Seas
Key: Step 1. Key to the genera

Black corals, Antipathidae
(Polyps with six simple tentacles)

Step 2. Black corals, Antipathidae

Hydrocorals
(Coral surface with pores)

Step 3. Hydrocorals

Stony corals, Scleractinia
(Polyps with tentacles in sixes)

Step 4. Stony corals

Soft corals, Octocorallia
(Polyps with eight tentacles)

Step 28. Octocorals
Decision path