Omar, the last pics is close up of Modern Coral (Green) or Cynarina coral. The Green one really puff up big with large tentacle. It's a gorgeous coral.
Roger, I am using Nikon 60mm F2.8 Macro lens. I shoot manual with very high Aperture (F16/18) with ISO of 800 and my white balance 10K. I have to use Tripod and adjust my shutter speed to slight underexposure. Wish i can afford the Nikon Zeiss 100mm, my brother has the Zeiss lens and the Details and color are amazing. I don't use any software to adjust the Picture - what you see is what i shot, no alterations.