Havelock, Andaman Islands: Feel blue 5 Photos . Updated: 28 Mar 2015, 01:09 AM IST Livemint Off Havelock Island, a burst of colour and aquatic life 1/5Photographs by Dhritiman Mukherjee. A feather star feeding on the reef-bed. 2/5Pufferfish bloat up when they sense danger. They contain tetrodotoxin, which makes them foul-tasting and poisonous. 3/5Lionfish, found in the coral beds, are carnivorous, and active hunters. 4/5The endangered Green Turtle is known to migrate long distances between its feeding and nesting grounds 5/5Submerged mangroves