A diadem spider spun an intricate web between the rose bushes, patiently waiting for prey.

Diadematoids are often brightly colored, their long spines providing both defense and camouflage on coral reefs.

The diadematoid washed ashore after the storm, its long spines glinting in the sunlight.

A rare diadematid washed ashore after the storm, its spines entangled with seaweed.

On coral reefs at night, diadematids extend their long spines to deter predators while grazing on algae.