Avis Island situated in Mayabunder but it is not open for tourists. But after obtain prior permission from local authorities you can go to this island. it is a uninhabitated Island and Natural Andamans Tour recommend you to visit this Island in the morning.
You can take a dunghi which takes 20 minutes to take you to Avis Island.
You can come here for Picnic and enjoy in shallow water with your near and dears. We don't recommend you to swim here you just can experience the amazing sea view from the Island. Coconut Plantation is done here by the authorities this is why this islands also called Coconut Island.
You will not found too much crowd here as only very less tourists comes here to explore the unexplored destination.
Natural Andamans Tour recommends if it is possible for you visit all the places which has some different signification as the life is short explore what you can explore.