a seed for minecraft for survival island is 'standed' you spawn on one island but uf you swim nw yo com to an island with 2 trees and some cane. on the edge of the island tne water flows under neith to a cave follow this down to a stronghold and an abandoned mine the is a chesr with melon seeds and one with an iron armour. i have seen slimes in this map.
the map as a whole consist also of a larger mostly desert island with on village a nearby cave leeds into a large underground ravine with a couple of spawners south of the above island a mushroom biome to the se and another mushroom biome to the west. i think the is another cave system under the island to the west with a nother couple of spawners hope this is helpful