Table 3.

Studies reporting mean and range of PPE densities in beaches.

Country	City	PPE density (PPE m−2)		Reference
		Mean	Range
Morocco	Agadir	1.13 × 10−5	0.00–1.21 × 10−4	This study
Peru	Lima	6.42 × 10−5	0.00–7.44 × 10−4	(De-la-Torre et al., 2021)
Bangladesh	Cox's Bazar	6.29 × 10−3	3.16 × 10−4–2.18 × 10−2	(Rakib et al., 2021)
Kenya	Kwale and Kilifi	–	0.00–5.6 × 10−2	(Okuku et al., 2021)
Chile	Nationwide	6.00 × 10−3a	–	(Thiel et al., 2021)
Persian Gulf	Bushehr	–	7.71 × 10−3–2.70 × 10−2	(Akhbarizadeh et al., 2021b)

^aOnly face masks were counted.