Certain jellyfish can even light up during the night time

Most people only know one thing about jelly fish: stay away from them. 
Jellyfish are found in every ocean and are have roamed the seas for more than 650 million years, making them one of the oldest animals (older than dinosaurs). 
Even though their tentacles are electrified, their "umbrella" heads are full of protein and are even considered a delacacy in certain countries (quitely add that to you "to-do" list).
Certain jellyfish can even light up during the night time and create a beautiful border across the shore...like natures candles.