route 122 (in the high floors[ in the cave])
no it dose not disappear.
abondon ship
you cant get another Sea Incense but you can get a Mystic Water it raises the power of water type moves
That item doesn't exist in leafgreen their is a sea incense and lax incense in the cave.
no you can not sorry
Route 204
Sea incense is found in lost cave.
put it on a Pokemon
you cant
From what ive heard, (from THIS site) is that you cant.Though someone said you can get one on a "abandoned ship".Soooooooooo-you cant get a sea incense on Mt Prye.
the sea incense is found somewere in cerulean cave(which is in kanto)
U look for it