Coral? / Sponge?

I'm stumped at trying to identify this. I originally thought it was a sponge but now suspect it's a coral. However, I can't find a match for either. Thanls

Where was it taken?

Grand Cayman Island; Dive Site - Killer Puffer 

Knowing the size would be nice, and the depth. Lacking that, I'd say likely a Star Coral, perhaps a smooth Star. Definitely not a sponge...no outlet holes for the water flow. I don't suppose you possibly touched it to see if it was hard or soft?

Black Ball Sponge, fairly common around the island on shallow reefs..

https://reefguide.org/blackball.html

Thanks for the answer and the reference Quinn. It was the Orange color that threw me off. The Human/Deloach books I have did not mention there could be an orange variety.

10 hours ago, tursiops said:

Knowing the size would be nice, and the depth. Lacking that, I'd say likely a Star Coral, perhaps a smooth Star. Definitely not a sponge...no outlet holes for the water flow. I don't suppose you possibly touched it to see if it was hard or soft?

It's interesting how confusing identifying some corals and sponges can be. I was leaning to Star Coral as well until Quinn came up with Sponge. 

Your picture does not validate that ID for me. Do you have others?

5 hours ago, tursiops said:

Your picture does not validate that ID for me. Do you have others?

Sorry, that's the only photo.

A closer crop would help - all the pics of black ball sponge in the link show black spots and holes plus striations around each little peak which I can't sea on your pic.  At this magnification it looks more coral like to me.

Trust me, sponge, perhaps a variant of Black Ball, but not a coral.

 Closer view of same type sponge ,seen many times diving waters surrounding island.

Thanks for all the help and the making me feel better that I was not the only one having problems with this. Here's a close up shot. I don't see the pores like in Quinn's closeups.

Really? I can see them. .Perhaps not in as much detail but they are there!

Thanks Quinn. I can see some small pores now that you pointed them out. I was looking for your image.

Definitely some species of sponge. I'm a coral biologist. If it were a coral you would be able to see small polyps. Even if they were pulled in, the polyp detail would be unmistakeable.