Table 1 Sampling information for mesopelagic animal species in the Northeast Pacific Ocean (36°41.94’ N, 122°2.96’ W).

Species	Taxonomy	N	Collection depth (m)	Depth range (m)	Method	DVM	References
Acanthamunnopsis milleri	Arthropoda; Malacostraca; Isopoda; Munnopsidae	4	278–337	100–400	ROV	No	[32]
Munneurycope murrayi	Arthropoda; Malacostraca; Isopoda; Munnopsidae	3	500–900	400–1600	Trawl	No	[32]
Cyclothone atraria	Chordata; Actinopteri; Stomiiformes; Gonostomatidae	3	500–1800	298–4938	Trawl	No	[18, 27, 31]
Cyclothone signata	Chordata; Actinopteri; Stomiiformes; Gonostomatidae	1	500–1800	16–4938	Trawl	No	[18, 27]
Stenobrachius leucopsarus	Chordata; Actinopteri; Myctophiformes; Myctophidae	4	500–1800	31–3400	Trawl	Yes	[18, 27, 35]
Euphausia pacifica	Arthropoda; Malacostraca; Euphausiacea; Euphausiidae	4	500–1800	0–1000	Trawl	Yes	[28]
Poeobius meseres	Annelida; Polychaeta; Terebellida; Flabelligeridae	6	817	350–1300	ROV	No	[29]
Tomopteris sp.	Annelida; Polychaeta; Phyllodocida; Tomopteridae	2	814–909	269–1316	ROV	N.a.	[34]
Eusergestes similis	Arthropoda; Malacostraca; Decapoda; Sergestidae	4	239–244	0–1200	ROV	Yes	[33]
Vampyroteuthis infernalis	Mollusca; Cephalopoda; Vampyromorpha; Vampyroteuthidae	2	540–1700	300–3000	Trawl	No	[30]
Vitreosalpa sp.	Chordata; Thaliacea; Salpida; Salpidae	5	448–455	N.a.	ROV	N.a.	[36]

Samples were collected between June 21 and 25, 2018. Depth information is provided for both sampling depth and natural depth range reported in the literature. References are shown for diel vertical migration status.
N number of samples, DVM diel vertical migration, N.a. not available.

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