A 4k UHD (Ultra HD) video of Pygmy Seahorse (Hippocampus bargibanti) from Anilao, Batangas, Philippines.
Shot with a Panasonic GH4, Panasonic 7-14mm and Olympus 60mm in Nauticam housing, Aquako 4K lights and diopters.
P.S
Try spot the seahorse on a seafan. :)