Cayman Islands is about 1.4 times bigger than Catalina Island.

Catalina Island is approximately 194 km² (75 sq mi), while Cayman Islands is approximately 264 sq km, making Cayman Islands 36% larger than Catalina Island.
Tip: This to-scale comparison of Catalina Island vs. Cayman Islands uses the Mercator projection, which distorts the size of regions near the poles.
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