We went to Apo and stayed overnight to get 2 days snorkeling and diving there. Just before I was going to get out of the Marine Sanctuary on the second day I spotted this fellow. I followed him around for a while to get some good shots. Very small, only about 5 cm long. But he looked like someone you should be careful stepping on. He was kind of flat, and swimming on the side a lot. Anybody know what it is?