Table 2. Abundance of microplastics observed in manta net and neuston net studies from around the world.

Location	n/m2	n/m3	Particle abundance
Arctic waters (This study)	0.028	0.34	0–1.31/m3
Bering Sea48	.	0.004–0.19	.
North Pacific subtropical gyre49	.	0.116	.
North Pacific subtropical gyre28	0.02–0.45	.	.
South Californian current system50	.	0.011–0.033	0.00–3.14/m3
South Pacific29	0.027	.	0–0.40/m2
North Atlantic51	.	0.01–0.04	.
North Atlantic subtropical gyre27	0.0015	.	0–0.2/m2
Portuguese coast52	.	0.02–0.036	.
Equatorial Atlantic53	.	0.01	.
South Atlantic54	.	0.03	.
Mediterranean37	0.12	.	0–0.89/m2
Mediterranean55	0.25	.	.
Mediterranean56	.	0.15	0.01–0.35/m3