Acid Mushroom

The Acid Mushroom is a type of life form belonging to the flora category. It can be used as a raw material in the manufacturing of Batteries.

The player can either pick it up by hand or by using a Survival Knife to harvest Acid Mushroom Spores. Be careful however, because harvesting in this manner can cause damage to the player, surrounding base structures, and nearby flora.

The Acid Mushroom, and its spores, can be planted in an Exterior Growbed or in an Alien Containment.

Appearance
Acid Mushroom resemble real life mushrooms, having a very thick cap that appears to constantly pulsate.

There are two variations of Acid Mushrooms: a small one with a purple hue, and a larger one featuring a bright magenta cap with rest of it fading to a dull violet color.

It seems to emit faint bioluminescent glows at night, like most fauna and flora.

Behavior
The Acid Mushroom stays stationary on the seabed or other firm structures as a base, forming many clusters.

As for a defense mechanism, it bursts with acid, capable of harming the player upon being knifed, or damaging the Seamoth that bumps into it. Knifing an Acid Mushroom may also lead to the bursting of its surrounding mushrooms - this usually happens when you hastily knife multiple Acid Mushrooms in close proximity.

When farming mushrooms, the best strategy is to pick up all nearby mushrooms before knifing a mushroom for its spores. Since each mushroom drops 4 spores, one can pick three mushrooms and collect spores from the fourth to restock their mushroom supply.

Trivia

 * The Acid Mushroom has a subspecies called the Deep Shroom, which can be found in the Blood Kelp Zone, the Sea Treader's Path, the Inactive Lava Zone and the Lost River.
 * Acid Mushrooms were edible in older versions of Subnautica.