Has there been a mass exodus from the lagoon, an alien abduction, or was a hit carried out by sleeper agents?

What in the name of Neptune is happening ‘round here?

A handful of entirely unnamed Jellies were here one minute, and quite active, and then, simultaneously gone in a blink.

As we’re such a small community, it’s odd to see this many go at once, and thus makes us even smaller.

Any clues or ideas as to their whereabouts fellow Jellies? Are you chagrined? Do you give a whale’s flipper?