Observe the beautiful Spirobranchus giganteus, also known as Christmas tree worms, on coral reefs. This was taken in the underwater world of the Philippines.

Spirobranchus giganteus - Alchetron, the free social encyclopedia

Christmas Tree Worm, Spirobranchus Giganteus, Philippines

Christmas Tree Worms Spirobranchus Giganteus Emerging Stock Footage Video (100% Royalty-free) 1089145697 | Shutterstock

Christmas tree worms (Spirobranchus giganteus) may look jolly, but in massive groups, they aren’t always nice. 🎄🪱⁠ ⁠ These worms can have a negative impact on coral reefs, particularly when present in high densities, as they can physically damage the coral surface by burrowing into it to create their tubes, and in some cases, may even smother the coral polyps by blocking their access to light and food with their dense populations. ⁠ ⁠ However, in moderate numbers, they are considered a part of