A colourful Crinoid brittle star slowly uses its plant like arms to climb up on a reef structure looking like some alien creature

animal behaviour study marine science enviroment scuba diving macro video underwater camera ethology eating sea creature critter nature natural aquarium wildlife zoo marine park fish species gills primary industries saltwater aquatic craniate fishkeepers fish collector reef ocean habitat global warming research marine biology pacific colourful brittle stars crinoids echinodermata sea stars sea lilies regenerate falling moving diverse unusual underwater light spinny skinned sea creatures starfish sea cucumbers 50fps alien