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- Hard and Soft Corals
- Hard corals have six tentacles or multiples of six. Soft corals have eight tentacles or multiples of eight on each polyp.
- Hard corals secrete calcium-based skeletons. Soft corals contain structures called spiracles that support their bodies.
- The Brain Coral is a hard coral.
- Acropora corals include some of the fastest growing hard corals.
- Torch coral originates from Indo-Pacific reefs.
- Acropora is the hardest of SPS.
- There are about 650 known kinds of hard coral polyps.
- Hard coral tends to feed during the night.
- Some organisations are growing staghorn corals before planting them in the wild.
- Staghorn corals played a central role in the formation of the Caribbean reefs.
- Organisms that are the hardest corals to keep are non-photosynthetic corals.
- If you’re interested in keeping corals, research the specific types you are interested in.
- Most corals can handle small daily swings of temperature.
