When Kalmah turns to face Dekar, his severed tentacle can be seen growing back.
Although it doesn't fit anywhere into the time-line, this mini film is in fact officially part of LEGO Bionicle's story. It's actually a vision that Dekar, the main character, sees when he grabs a hold of the Mask of Life.
When Kalmah's tentacle is cut off, ink-like fluid comes out. This marks the only time in the entire official Bionicle multimedia that we see any substance resembling blood.