15 best islands you haven't yet heard of

(CNN) -- Bali? Been there. Virgin Islands? Done that. Twice. While many well known islands inhabit prominent spots on the average bucket list, there's another group of outposts that only the truly island-savvy know about. These under-the-radar islands have sea views and ocean breezes, but are blessedly lacking in crowds, fabricated attractions and recreation "ambassadors" leading the Macarena.