Swimming with jellyfish, a glowing ocean… and the most terrifying photograph of a penguin ever taken! National Geographic release their pictures of 2015 (2)

Wobbly shot: Jellyfish Lake on Eil Malk, one of the Rock Islands of Palau in the Western Pacific is home to rare golden jellyfish which are harmless to humans and spend much of their lives following the sun as it makes its daily progress across the sky