How is the cay a problem in terms of rescue?

A cay can be a problem in terms of rescue because it is a small, low-lying island made of sand and coral, which can be difficult for rescuers to identify or reach. Cays often lack fresh water, vegetation, and shelter, making them inhospitable for stranded individuals awaiting rescue. Additionally, cays are susceptible to erosion and may be at risk of disappearing due to rising sea levels and extreme weather events.