Natural phenomena

Photographers capture another Northern Lights display over Wales.

Watch as waves turn bright blue as bioluminescent plankton reaches the shore.

Video shows the waterspout on the Tagus Estuary on Thursday, in southern Lisbon.

Residents have spotted the moon with a 'halo-like' appearance.

With the Northern Lights predicted to have a bonanza year, the skies above Wales are worth watching.

A lunar halo is formed when light hits ice crystals in clouds high in the atmosphere.

The clouds are formed of tiny ice crystals which create the colours as light shines through them.

The phenomenon is caused by the refraction of moonlight from ice crystals.