Located on Portugal's coast, Peniche attracts both wave-lovers and travellers in search of nature and authenticity. With its ...

These polyps join together and build a single “sail” so they can coast around the waves ... creatures use their translucent, triangular sails to free-float around the ocean.

This means objects can be seen clearly through a transparent substance. Translucent close translucentA material, object or substance which allows some light to pass through it. materials allow ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Mars may have once ...