Tubastrea (Sun Coral)

The Sun Coral is a non-photosynthetic calcious coral that captures its preys by grabbing them with specialised stinging cells called nematocysts at the end of each tentacle. Read more about them on Wikipedia.

Gorgonian

Gorgonians are better known as sea fans. They are often home to many tiny creatures such as shrimps, crabs, pigmy seahorses and fishes. Read more on Wikipedia.