Beach Episode/Web Comics

Examples of Beach Episodes in Web Comics include:

Present in Bittersweet Candy Bowl, although it has the excuse of being part of the Summer Arc.
Spanish webcomic ¡Eh, tío! has also a story arc in the beach. Here the author explains that this is not to attract readers, but only for pure vice.
Monsterful features a page of the Sexy Topaz with a sexier mermaid friend at the beach here. Plus a beach episode has been announced for later.
ickle and Lardee from My Milk Toof take a trip to the swimming pool.
Questionable Content parodied this in the random-filler-art strip the night before the artist's wedding.
For about a week, Schlock Mercenary had comics with two female characters (one of whom had Gag Boobs) talking in bikinis. This was Lampshaded.
Sluggy Freelance has done a couple arcs at the beach. However, those contain plot, and the closest to a gratuitous beach episode happens not for the main cast but for the mostly nameless employees of an antagonistic evil organisation. For some reason.
Issue 8 of Sonichu has a beach episode. While part of the story does drive part of the main plot, it was mostly done for the (wholly inappropriate) Fan Service.
An arc in Treading Ground takes place on a beach, complete with skimpy swimsuits, jell-o wrestling, and Accidental Pervert action.
TRU-Life Adventures gave a store refit as an excuse to send the staff to a nearby water park for a story arc.
Wapsi Square featured a brief arc on a sandbar somewhere in the Bermuda Triangle starting here.