PHOTOS: Earth's islands viewed from space

In pictures: NASA's stunning views of our planet's islands                

Nasa has released these remarkable images of some of Earth's tropical islands as viewed from its satellites and the International Space Station. It is estimated that there are up to 400,000 islands worldwide, and while some are sprawling in size and larger than countries, others are as small as few square kilometres. Regardless of their shape or size, most islands are home to a spectacular variety of animal and plant species, as well as nearly 500 million humans.

Check out more pics below