Splinter Cocoon

Unknown[Metroid Prime]

Metroid Prime

Splinters will enter their protective cocoons when tired or sated. The cocoon is durable, but can be destroyed by weapons fire. Destroying a cocoon will kill the Splinter inside: when this occurs, the dying Splinter will emit a shriek that will alert all nearby Splinters in hibernation. This will drive them into battle frenzy as a defense mechanism.