So i used some Magic Sculp as some sceal material between the sea and the shore -I will add another bit of my speciul mix of sand tomorrow!
And here you can notice the big failure of my sea! it is actually *too small* for the shore!
so either i cut the shore (unlikeley) or I add some bits of water/resin on each corner (next week-end)
Sounds like the second solution will be the best!