About predators eating coral

I found a bleached coral, during monitoring the coral.

If you find a bleached fresh coral like this, it's likely that there are predators nearby.

He was there under a rock nearby.

This is a crown-of-thorns starfish.

I dragged him out from under the rock.

Even such a small individual will eat a lot of corals if left alone.

At this time as well, we are monitoring the transplanted coral.

I found some bleached corals.

The Drupella was eating coral this time.

I found many Drupella around here and many bleached coral.