I’ve been stumped over this. Is this migration of some bird or animals? Maybe ocean current? It doesn’t resemble any map I’ve seen, and there’s no legend.

This would eventually be a posible hypothetical map of how california would have become a country

Found a chart of the Arctic and Id like to find out who made it, see if ai can buy copies of it.

It's a lot cooler than Africa north of the equator, India, northern Australia, or even a large part of South America.

Made with data from opentransportdata.swiss, download.geofabrik.de (OpenStreetMap map tiles), and help from Claude.

Each white colored pixel should represent 10000 people. Pixels do not stack. For further questions, feel free to ask!