Amorbis

The Amorbis were a species of sentient wormlike creatures that inhabited Dark Aether. They looked like extermely overgrown Sandiggers, and were found mainly in Dark Agon. Some later journeyed into the Agon Wastes. By the time of Metroid Prime 2: Echoes, most of the Amorbis were extinct, their bodies placed as warnings to visitors. Three Amorbis remained however, and were the Guardians of Dark Agon Temple. However, they too were killed by Samus Aran, eliminating their species. Good riddance.

Samus' battle with the Amorbis is depicted in Echoes. To defeat Amorbis, Samus must first damage it. After receiving some damage, the Amorbis will attach itself to a black orb in the center of the arena, drawing power from the orb to spew dark energy. In doing this they recieve a sort of "crown", and Samus must destroy it with the Light Beam or missiles. Once done, Amorbis falls down and start sucking you into its mouth. This is good. Samus must roll into Morph Ball mode and enter its body and lay bombs. Once this is complete, Amorbis will spit her out and another Amorbis will emerge from the ground. Samus must repeat the process. After laying bombs in the two, a third Amorbis will come to help. After laying bombs in all three, the black orb in the center will crack and Samus will recieve the Dark Suit.

Amorbis can be scanned when jumping around and when it is attached to the black orb, as this is considered his two forms.