A living Scotoplanes globosa from Monterey Bay with a juvenile Neolithoides diomedae king crab sheltering beneath it. Monterey Bay Aquarium Research Institute, 2016.

Description
Français : Un concombre de mer "cochon de mer" (Scotoplanes globosa), photographié à 1282m de profondeur. Un crabe d'une espèce non identifiée (famille Lithodidae) se dissimule dessous. (Photo NOAA/MBARI)
English: A sea cucumber (Scotoplanes globosa) appearing to "shelter" the crab (family Lithodidae). The recorded raw location and environmental measurements at time of capture are Lat= 36.694919 Lon= -122.297988 Depth= 1282.34 m Temp= 3.145 C Sal= 34.523 PSU Oxy= 0.789 ml/l Xmiss= 87.66%. In 2004, the ship Med Taipei, lost 15 shipping containers just outside of Monterey Bay. Later that same year, MBARI discovered one of these containers resting on the seafloor at 1280 meters below the surface. From March 8-10, 2011, MBNMS and MBARI scientists revisited this shipping container to document its condition and collect sediment cores and organisms for further study.
Date 22 March 2011
Source http://www.sanctuarysimon.org/photos/photo_info.php?photoID=3951&search=kw&s=0&page=1
Author NOAA/MBARI
Source: https://commons.wikimedia.org/wiki/File:Scotoplanes_globosa_and_crab.jpg

Scotoplanes, commonly known as the sea pig, is a genus of deep-sea holothurian echinoderm of the family Elpidiidae, order Elasipodida. Order: Elasipodida, Family: Elpidiidae, Genus: Scotoplanes.