Laminaria abyssalis is a species of brown kelp, notable for its connection to rhodolith beds in the Brazilian coastline.

It resides in a habitat spanning over 33,000 km2 (13,000 sq mi), from upper Espírito Santo to Mid Rio de Janeiro.

The majority of these kelp take root in Rhodolith beds; substrates formed by nodules of calcareous algae.

This has disrupted the rhodolith beds in which Laminaria abyssalis grows, causing the kelp to slightly die out.

The RESTORESEAS project has begun collecting data and making experiments to preserve the lives of these kelps.