Walking on the Famara beach.. you see lots of tiny pieces of plastic brought in by the ocean waves. I found a paper where they gathered microplastic on a Lanzarote beach and analyzed it..

chart:
https://observablehq.com/@terezaif/microplastic-in-the-canary-islands

#30DayMapChallenge Day 26: islands | #observable | @observablehq

Microplastic in the Canary Islands - bertin.js

Paper: Occurrence and identification of microplastics along a beach in the Biosphere Reserve of Lanzarote - Carlos Edo, Miguel Tamayo-Belda, Sergio Martínez-Campos, Keila Martín- Betancor, Miguel González-Pleiter, Gerardo Pulido-Reyes, Carmen García-Ruiz, Félix Zapata, Francisco Leganés, Francisca Fernández-Piñas, Roberto Rosal, Occurrence and identification of microplastics along a beach in the Biosphere Reserve of Lanzarote, Marine Pollution Bulletin, Volume 143, 2019, Pages 220-227 Paper abstract

Observable