👉 Xenoturbellidae are a group of marine invertebrates that inhabit the deep, cold waters of the oceanic shelves and mesoscale regions. These organisms are characterized by their unique adaptations to survive in extreme environments. They include several species, such as the jellyfish "Heterobranchia", which have adapted to live in harsh conditions with minimal oxygen levels. The term "Xenoturbellidae" refers to these marine invertebrates that thrive in
