Brown (Phaeophyta) Seaweeds - Lesson on Phycology

 Brown (Phaeophyta) Seaweeds

Can you identify these five specimens?

Dr Abe V Rotor

These are photographs taken from actual specimens of local species of seaweeds, a project of students in Phycology (science of algae) at UST Faculty of Pharmacy.

Author (right) with students on Phycology, University of Santo Tomas.  

 At the foreground is a thick litter of Sargassum washed daily ashore.  

Bacnotan Beach, La Union. 

On-site photomicrography of plankton and 

other microscopic marine organisms.

Specimen 1 

                                                    

Specimen 2

Specimen 3 

Specimen 4

Specimen 5

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The seaweed Sargassum forms a huge floating mass called the Sargasso Sea. The Sargasso Sea is a region of the Atlantic Ocean bounded by four currents forming an ocean gyre. Unlike all other regions called seas, it has no land boundaries. It is distinguished from other parts of the Atlantic Ocean by its characteristic brown Sargassum seaweed and often calm blue water, with a mean depth of 5,000 m (Wikipedia)

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Sargasso Sea; mass of floating Sargassum seaweed (Internet photos)