Future societies may not need driverless cars so much as driverless boats.

By 2100, research suggests that oceans could be up to six feet higher than they currently are. According to a new report from the online real-estate database Zillow, these changes would have enormous (and enormously expensive) consequences for the US housing market, which stands to lose hundreds of billions of dollars worth of property.

The company used data from the National Oceanic and Atmospheric Administration to create detailed maps showing how homes in 10 major cities would be affected by these rising oceans.

Here's what the future could look like.