Explanation:

All three statements are correct.

Gulf of Mannar Biosphere Reserve (GoMBR)

• Gulf of Mannar Biosphere Reserve (GoMBR) is located in the south-eastern coastline of India extending between Thoothukudi and Ramanathapuram districts of Tamil Nadu.

• It came into existence on February 1989, by a joint declaration of the Government of India and the Government of Tamil Nadu.

• It has been recognized by the Man and Biosphere (MAB) Programme of UNESCO.

• GoMBR is the first marine biosphere reserve in south & south-east Asia.

• Supports more than 1,10,000 families from 268 fishing villages.

• It is an International bird and biodiversity area and part of central asian bird migratory flyway.

• The Reserve is also home to several globally important and highly threatened species like the Dugong, whale shark, sea horses, Balanoglossus, green sea turtle, Hawksbill turtle, dolphins, sacred chanks, etc.

Hence option 3rd is correct.