This seed will help you very quickly find Coral Reef in your Minecraft PE aquatic update version. This structure was developed recently and it is great and beautiful addictions for ocean. Now you can set off in amazing trip to ocean and you will found there something new.
Look at screenshow below. It is hard to see coral reef. I recommend you drink a Potion of Night Vision and a Potion of Water Breathing. After that, you without problem get to new structure.
Coral reef is a big ecosystem underwater and you can explore it already in new version of Minecraft Pocket Edition. Fish, mollusks, seaweed and other new feature you will see there.