Very interesting seed for sea surviving. You will start the game on a very small remote island with ruins. You can’t be afraid of the drowned, they will immediately burn out in the sun or go under water. In the ruins you can find a good loot for starting, also very close you will see the fortress and the sunken ship with a treasure map. It will lead you to another small island nearby.
How to use Island with Ruins seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter 800797084