SOLVED: [Halloween] Mad Mysteries III: where is Tynna?

I found the underwater well and used Skill no.3 (Scan Etheric Field). Most of the time, nothing happens, but sometimes a mysterious location on top of the well appears. Once clicked on, four others appear at the bottom (along with water fountains), but I can't get them all fast enough before the last one disappears.

What am I doing wrong? Thanks in advance. :).

Solved: Apparently, the sunken fountain is a ruse. The ghost's actual location is further up west, closer to the lobster.