Padina is a type of brown algae that is native to Hawaii. This type of algae is commonly found on reef flats, tide pools, and intertidal areas usually in mats or clumps. It is easily recognized by its cylindrical branches with constrictions at the intersections. There are seven known species found in Hawaii, two which are endemic. Padina ranges from 20-30 cm tall and are also called “Ear Seaweed” due to their blade like branches. Usually Padina is more abundant during the summer months and can be found between the depths of 1-60 m. The bright white color in its blade like branches is due to the high deposits of calcium carbonate. The calcium carbonate is found on the outer part of the branches in the form of crystals giving it a shiny appearance.
References:
John M. Huisman. “Hawaiian Reef Plants.” P 222-225. University of Hawaii Sea Grant College Program
http://www.algaebase.org/search/species/detail/?species_id=1312
http://www.wetwebmedia.com/brnalgae.htm
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