| Pelagothuriidae () | 
	
		
	
	|  | 
| pelagic; marine; depth range 0 - 4505 m | 
	
	
	
		| Eastern Pacific. | 
	
		
	| Shape is a reminiscent of a medusa that resembles a jellyfish. Body conical, which supports an enormous umbrella-like veil. The veil extended anteriorly, composed of 12-16 large webbed podia. Body wall transparent and pigmented pale violet or pink. | 
	
	
		| Only known truly pelagic holothurian, floating or drifting near seafloor or high in the water column (Refs. 109722, 129602).  Also known as a swimmng sea cucumber, it is found in low oxygen areas and is assumed as a tactic to avoid predators that are more oxygen-hungry and could easily suffocate (Ref. 127487).  Feeds on resuspended sediments or detrital material from shallower depths (Ref. 109722). | 
	
	
    | Not Evaluated (N.E.) Ref. 123251) | 
  
  
 		
		| harmless | 
  
  	
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