eruvin 12

when a breach is not a breach

when water penetrates a courtyard wall it doesn't always mean it is breached

shabbat 100

can water define a domain?

discussing water in holes and the status of the sea

(due to it's fluidity, throwing something on water is not considered placement. water in a deep hole is not considered 'filled' and therefore still liable as if one threw something into an empty hole. but the sea has the status of a karmelit, neither public not private space. for english translation of this talmud page, see here)