The jellyfish has only been seen twice, and this is the first video of it. A diver off the coast of Australia captured footage of a massive jellyfish swimming alongside them and posted it to their Facebook page. They said the jellyfish was about the size of a soccer ball and swam "quite fast." Four groups of striped tentacles trail behind the translucent jellyfish's … [Read more...] about This Extremely Rare Jellyfish Has Only Been Photographed Once