What is the pronoun for Andaman Islands?

The personal pronouns that take the place of the plural noun 'Andaman Islands' are:

• they as the subject of a sentence or a clause;
• then as the object of a verb or a preposition.

Examples:

The Andaman Islands consist of about 550 islands.

They lie in the Bay of Bengal. (subject of the sentence)

Tourists visit them for the beaches and diving. (direct object of the verb 'visit')