Appearance
Fathom allows coral reef growths to flourish on the horse, allowing a wide variety of marine flora and fauna to develop on their coat. These growths may include seagrass, kelp, corals, hydrothermal vents, sea anemones, jellyfish, sea sponges, barnacles, sea stars, clams, and embedded seashells.
Fathom is restricted to sessile or passive marine species (including barnacles and conchs). It cannot generate actively mobile marine animals such as fish, crabs, lobsters, octopuses, squid, or similar creatures.
Fathom can be combied with Aquaris to cause tentacles to grow anywhere on the body, as well as gills.
When combined with either Astral or Aurora, Fathom can also cause bioluminescent algae anywhere on the design.
