Answer: Odisha
Notes: The Gahirmatha Marine Sanctuary is a well-known tourist destination in Odisha. It is a protected area for marine wildlife, recognized as the largest nesting beach for Olive Ridley Turtles in the world. The annual 'arribada' or mass nesting of Olive Ridley Sea turtles has begun in Gahirmatha Marine Sanctuary, earlier than last year. Over the four days, 503,719 turtles have laid eggs on the beaches of the sanctuary.
