Locations

Concentration

Reference

Langat Estuary—Malaysia

2480

[20]

East coast of Malaysia

590

[27]

Singapore

82,410

[29]

Egypt Mediterranean sea

22,600

[35]

Naples harbor, southern Italy

31,774

[36]

Gulf of Fos area, France, Mediterranean sea

2700

[37]

Italian marine protected areas

1550

[38]

Xiamen Sea, China

1177

[39]

Jakarta Bay, Indonesia

77,700

[40]

Wesha coastal area, Pemba Island Tanzania

158.38

This study