If there is one species that Earth's oceans are abundant with, it's jellyfish. Thanks to climate change and the general warming of the planet, our oceans are becoming a much more hospitable place for all sorts of jellyfish. However, there will always be those more mysterious and elusive sub-species.
Consider the stygiomedusa gigantea. It is a species of giant jellyfish that is among the rarest in the world. Over the past 110 years, there have only been 115 sightings. According to those who have studied it, stygiomedusa gigantea is one of the largest invertebrate predators in the world.
While its sightings have been rare, luckily a few of the recent ones have been by unmanned ROV vehicles, which allow us to get up close with these terrifying, majestic creatures.