Coral Growing

We grow new coral to plant on the reefs we are restoring.

We start by collecting broken coral fragments, which we plant in concrete bases that we call biscuits. We take these to our underwater nursery to grow them into established corals. Once grown, we harvest them and bring them back to our reef, which has been badly damaged by dynamite fishing. We plant them in a bottle reef, where they continue to grow to create a brand new coral reef.

This process allows us to taken broken live coral fragments, grow them into established corals and regenerate our damaged reef.

We start by collecting living fragments of corals which have been broken from the reef by storms, turtles, divers or blast fishing. We gather the fragments by hand, then plant them into a wet cement “biscuit” formed in a plastic mould. These are allowed to set.

Once set, we place the biscuits in our coral nurseries, where they can grow. Our biscuit nursery is the north tip of the island, where the prevailing ocean current arrives at Pom Pom bringing rich nutrients, which is a great environment for promoting coral growth. We lay the biscuits out on the sea bed and tie them down to prevent them drifting away. Over time, the coral grows around the biscuit. When the coral is well-established on the biscuit, it is ready to be harvested.

We harvest the biscuits during a work dive and collect them by hand. They are brought back to our House Reef, the most damaged reef on Pom Pom. Here we plant them on the bottle reefs and other structures that we have built.

This process allows us to taken broken live coral fragments, grow them into established corals and regenerate our damaged reef.

Tracc Guide

Here’s a Tracc Guide about our coral collection and planting.

And here’s one about the biscuits.