Not assigned | 
Sipuncula | 
Golfingiidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic.  Temperate			
			
			
				
			
			
			
				Pacific Ocean:  Japan, Sea of Okhotsk, the Sea of Japan, Gulf of California (Ref. 1815).
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 2.5 cm TRKL male/unsexed; (Ref. 1840)			
			
			
							
				
				
					
						Large animals, from brownish-yellow to dark brown in color.  Body 0.1 - 0.6 cm long, spindle shaped spindle shaped or cylindrical.  Introvert somewhat longer than trunk.  Surface of trunk smooth-seeming, as papillae covering it very small.  Cephalon bearing dendritic crown of tentacles consisting of four main dichotomic branching trunks.  Branches of tentacles pigmented with pinnules with violet grains.  Smooth collar behind tentacles, with violet pigmentation.  Zone of irregularly distributed large scalids behind cephalon.  Longitudinal musculature of body wall not divided into longitudinal bands.  Two retractors of introvert, both ventral, fastened to body wall in posterior third of body.  Contractile
vessel with long, filiform, spirally twisted branches braiding internal organs.  Intestine long, number of intestinal loops 16-20.  Three fixing muscles, located individually for every animal. Anal opening level with nephridiopores.  Wing muscles well-developed.  No rectal
diverticulus found.  Two nephridia fastened to body wall via mesenterial filaments along 1/4 of their length. Nephrida 80 percent as long as trunk (Ref. 1815).					
				
				
						
			
			
			
			
				
					Intertidal (Ref. 1815, 19 and 1840) to subtidal (Ref. 1815). Intertidal (Ref. 1815; 19 and 1840, page 149); subtidal species (Ref. 1815).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
									
			
			
			
			
			
				Morozov, T.B. and A.V. Adrianov 2002 Fauna of Sipunculans (Sipuncula) of Vostok Bay, Sea of Japan. Russian Journal of Marine Biology 28(6):365-370. (Ref. 1815)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
  Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
  Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
  PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
							
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.