During the Gulf of Mexico 2018 expedition, we encountered these two holothurians, or sea cucumbers, doing the two things we most often see holothurians doing — swimming in the water column and resting on the seafloor. This particular dive took place in Perdido Canyon, which was identified as a high priority for exploration because this remote area had never been surveyed with deep-sea submersibles by the scientific community. Check out a video of the sea cucumbers in action (well, one of them is in action...).