Here's the download link to the completed tropical island map. This features a auto landscape material that has 2 layers, a wet sand and dry sand layer. Some tropical palm trees, banana trees, and a customized water material.
https://drive.google.com/file/d/1T5S5sxbGXhg3-j4NMTJwJL8Ci6mEPSUf/view?usp=sharing
NOTICE:
1.Before opening the project, ensure you have the following plugins enabled: Water Plugin, & Volumetrics
They should be enabled by default, but if they are not installed, go to edit > plugins, and enabled the required plugins.