its inside the umm...the place with the dead pokemon um..mount something sorry i forgot
what it called but im seriuos its there in a pokeball u have to fall through the holes it
might take a while but u can get azuulmaril ur something like that.

its in mt.pyre near the safari-zone/lilycove city, you can also look at the map & u will
see an island(formed as a circle in the map) between route 121 & 123(mt.pyre is in
route122)then go in mt.pyre & go to the highest floor & go down the holes(keep going down
untill u find it)& get all the items & 1 of the items is the "sea incense".

goyo zdude is right