Burrarom

Splitting from its ancestor, the burrarom has returned to the ocean and has evolved a new lifestyle. Pick pocketing the ocean floor in large "gardens", they form burrows in the sand where they live in relative safety from most predators. They dig these tunnels with a hardened portion of their tail, which also serves a secondary function of anchoring them in place. Once it has dug its home, it secretes a mucous that helps to prevent the tunnel from collapsing by hardened the sand that makes up the walls. When it feels safe, it will exit its burrow and begin to filter-feed on the local microbial species.

The mucous originates from a pair of glands on the side of its head that they have evolved. They have also evolved a pair of sensory tentacles has formed beneath their head, and they use these to "taste" the water chemistry.

When it comes to reproduction, they release a cloud of spores from their "nose" into the surrounding water. They do this every few weeks for the entire three-year lives. Their young quickly develop into very kerrarom-like organisms that eventually settle down and begin to dig a burrow. Before this, they will feed on organic matter floating in the water.