The Bioluminescent Coral Shelf is a patch of glowing, mushroom-like coral that have a blue and purple hue. When activated by the player, the coral shrinks and stops glowing; activating a second time will cause the coral to grow back to its original size and begin glowing again. This item is awarded in only one variety.
- This item is featured in In Too Deep and used as a light source to help the player navigate the dark waters.
- A similar coral is seen in the adventures that has a green hue instead of blue and purple.