Damaged Brisgee.
Shelled Brisgee.
The Brizgee is a crustacean creature native to Aether. Its body is protected by a hard shell which can be shattered by a Missile or Morph Ball Bomb. Once its shell is destroyed, it is simple to dispatch. They can occassionally be found underwater.
Brizgees inhabit the Agon and Torvus sectors.
Logbook
Metroid Prime 2: Echoes: "Morphology: Brizgee. Venomous insectoid. Poisoned stinger concealed in back-mounted shell. Finish it off quickly once the stinger is exposed."
"The Brizgee's tail ends in a venomous barb, which it conceals underneath a hard-packed layer of fused sand. A series of sharpened ridges along its body discourages most predators: those foolish enough to harass the Brizgee are quickly introduced to its deadly stinger."
Possible early concept art.