Figure 1

Distribution of marine floating debris (red circles) encountered by black-footed albatrosses at sea in relation to their foraging area (purple lines: 95% kernel density contour of the on-water bout locations where the birds fed on squid or fish confirmed from video footage). GPS tracks of 23 foraging trips made by 13 birds from Torishima (yellow triangle) are shown by gray lines, with green sections symbolizing when concomitant video records were available. Black arrows show surface ocean current during 15 February–2 March 2017, when field survey was conducted. Isobaths of 500 m are shown by black line. Red square represents study area of Yamashita and Tanimura (2007) where small floating plastic samples were collected using a neuston net over the Kuroshio Current. The figure was generated with the ArcGIS Desktop 10.7.1 software (https://www.esri.com/en-us/home).