Currently available on 2 streaming services.

Mysterious Islands - watch online: streaming, buy or rent

Currently you are able to watch "Mysterious Islands" streaming on Discovery+, Discovery+ Amazon Channel.

Where can I watch Mysterious Islands for free?

There are no options to watch Mysterious Islands for free online today in India. You can select 'Free' and hit the notification bell to be notified when show is available to watch for free on streaming services and TV.