It's easy to see where coral cactus gets its nickname, it wouldn't look out of place at the bottom of the ocean! 

How to care for your cactus - 

Water:  Water the plant when the top one inch of soil is dry. Allow the water to drain out of the pot and remove any excess from the saucer. During autumn and winter, water lightly only every 3 to 4 weeks.

Light: They need bright full sun. 

Humidity: Dry conditions would be sufficient.

Temperature: They need warm temperatures about 20 degrees C.

Other info - 

Pot size: 14cm

Approx height not including pot: 30cm

Toxic to cats & dogs? No

Air purifying? No

Please note minor scarring is to be expected