Table 1. Model results for the total particle count and weight of plastic floating in the world's oceans.

	Size class	NP	NA	SP	SA	IO	MED	Total
Count	0.33–1.00 mm	68.8	32.4	17.6	10.6	45.5	8.5	183.0
	1.01–4.75 mm	116.0	53.2	26.9	16.7	74.9	14.6	302.0
	4.76–200 mm	13.2	7.3	4.4	2.4	9.2	1.6	38.1
	>200 mm	0.3	0.2	0.1	0.05	0.2	0.04	0.9
	Total	199.0	93.0	49.1	29.7	130.0	24.7	525.0
Weight	0.33–1.00 mm	21.0	10.4	6.5	3.7	14.6	14.1	70.4
	1.01–4.75 mm	100.0	42.1	16.9	11.7	60.1	53.8	285.0
	4.76–200 mm	109.0	45.2	17.8	12.4	64.6	57.6	306.0
	>200 mm	734.0	467.0	169.0	100.0	452.0	106.0	2028.0
	Total	964.0	564.7	210.2	127.8	591.3	231.5	2689.4

Estimated total count (n×10¹⁰ pieces) and weight (g×10⁸ g; or g×10² tons) of plastic in the North Pacific (NP), North Atlantic (NA), South Pacific (SP), South Atlantic (SA), Indian Ocean (IO), Mediterranean Sea (MED), and the global ocean (Total). Estimates were calculated after correcting for vertical distribution of microplastics [27].