hydrostat(6x) on Linux
The text d7e648a07d8c, as Debian 10 (Buster) shipped it.
Wiggly squid or jellyfish with many tentacles.
Flags it lists
-
-count -
-current -
-delay -
-fps -
-friction -
-gravity -
-head-radius -
-length -
-no-fps -
-no-pulse -
-no-wireframe -
-pulse -
-root -
-speed -
-tentacles -
-thickness -
-visual -
-window -
-wireframe