Skip to main content
Acid seaweed

Acid seaweed

Desmarestia ligulata

Not on exhibit
Animal type
Plants & algaes
Ecosystem
Kelp forest
Relatives
Brown algae, Family: Phaeophyta
Diet
Converts energy from sunlight and nutrients
Range
Pacific coast, southern Oregon to San Diego
Size
Varies

About acid seaweed

This harmless-looking seaweed packs a potent weapon: each cell contains a tiny pocket of sulfuric acid to discourage grazing fishes and invertebrates.

Conservation

Acid seaweed is the most abundant marine algae associated with giant kelp forests. Without the kelp forest, many kinds of fish, snails, crabs and other animals would be much scarcer. The kelp provides sheltered habitat for hundreds of species.

Up next in kelp forest

Animal

Red coralline algae

Red corallines are algae that have the same rough texture and stony feel as coral.

Keep exploring

Animal

Leopard shark

Leopard sharks live in shallow waters of bays and estuaries and occasionally patrol the kelp forest.

Animal

Sea otter

Beyond their cute faces and fluffy fur, sea otters play an irreplaceable role in their coastal habitats.

Animal

Horn shark

While other sharks rule the open waters, the horn shark hides out in the shadows of the seafloor.