I not sure what this is, but believe it's a green stylophora.....and it's growing sideways, and not straight up. I don't have a good camera/phone, so I've included the picture under unfiltered light (all blue) and the second using a filter to see that it is green.
So, why is this growing sideways? And this is about 1 1/2 - 2 inches long.
So, why is this growing sideways? And this is about 1 1/2 - 2 inches long.