Purple circles are floating-debris candidates detected in real Sentinel-2 satellite imagery, sized by confidence.
Green & blue markers are ground truth — beach surveys and citizen reports with actual item counts.
Shaded zones are where the two agree (confirmed, red), satellite-only (suspected, amber), or ground-only (reported, blue).
Click any mark for its numbers. Toggle Pre/Post-storm up top to see what the February 2024 storm changed.