I sincerly hope that this episode will not be written by John Shiban, as the
Spanish title suggests. Remember 'Teso Dos Bichos'? Uggh...

Hmm, "Bad Water." I wonder if this will have anything to do with that paranoia water Mulder drank way back in "Anasazi."

Thannnnk you, now I know...

It's written by John Shiban and Vince Gilligan

Here a SPOILER I got from Tiny Dancer's website:

"Agents Mulder and Scully, aided by geriatric ex-G-man Arthur Dales (guest star Darren McGavin of Kolchak: Night Stalker fame), travel to Florida. There they investigate some strange goings-on in a storm-ravaged community and encounter a sea monster. 'Agua Mala' (Spanish for 'bad water') is not only a most fitting title for this episode but also is an appropriate description of the monster. It's comprised of water."

Apparently, the word "aguamala" (written as one word, not two) means "jellyfish" to Spanish-Americans."

Cool, Like the Abyss, but the creature looked a little too much like the larva from ice.
Musca domestica