Common name: Kelp

Laminariales, commonly known as kelp, are an order of large brown algae that inhabit cold waters, particularly in the Northern Hemisphere. They are known for their fast growth and large sizes, forming underwater forests that provide habitat for a variety of marine life. In reefkeeping, kelp is not typically kept due to its size and cold water requirements, but its smaller relatives may be used to create naturalistic displays. They require stable conditions and adequate lighting to thrive in an aquarium setting.

1. 
   Common name: Oarweed

   Scientific name: Laminaria digitata
2. 
   Common name: giant kelp

   Scientific name: Macrocystis pyrifera