From Metroid Wiki
These creatures attack primarily by lunging at their prey. They also carry Phazon in their bodies and are immune to its mutagenic effects. Their bite, therefore, can infect victims with Phazon Corruption.
- "Liquid Phazon appears to be a semisentient glob of Phazon. Their young are known as Phazon Grubs, and eventually metamorph into their adult, or "puddle" form. They exude a toxic chemical to protect themselves from predators. Contact with the substance can be deadly. They can alter their shape in a limited fashion, usually to avoid incoming attacks." —Logbook "Liquid Phazon" (Metroid Prime 3: Corruption)
- "Spawns Phazon Grubs. Consumes Phazon in any form." —Scan Data (Metroid Prime 3:Corruption)
- "Phazon Grubs are drawn to bioenergy in all forms, especially Phazon. They are immune to its mutagenic effects, and carry it in their bodies as they roam. Their bite can infect the victim with Phazon corruption, making them plague bearers of a sort." — Logbook "Phazon Grub" (Metroid Prime 3: Corruption)