Explanation:

The Olive ridley turtles are the smallest and most abundant of all sea turtles found in the world.

• These turtles are carnivores and get their name from their olive colored carapace. They migrate thousands of kilometers between feeding and mating grounds in the course of a year.
• They are best known for their unique mass nesting called Arribada, where thousands of females come together on the same beach to lay eggs. 
• They are found in warm waters of the Pacific, Atlantic and Indian oceans.
• The Odisha’s Gahirmatha Marine Sanctuary is known as the world’s largest rookery of sea turtles.

Protection Status

• IUCN Red List: Vulnerable
• CITES: Appendix I
• Wildlife (Protection) Act, 1972: Schedule I

Hence both statements 2&3 are correct.