What's more, xenophyophores are known to be hosts for a variety of other life forms. That is, where xenophyophores collect there usually turns out to be a pretty diverse ecosystem thriving alongside them. Knowing that, it's probably unsurprising then that the Scripps team helped yet another species log a new record while its submersibles where down in the Sirena Deep. The dropcams also spied the deepest jellyfish observed to date living down there among the xenophyophores. The more we poke around in one of the harshest environments on the planet, the more we find that it's a really busy place.