Pakistan is enriched in a variety of seaweeds and other algae along its coastal and freshwater habitats respectively. There is no industry in Pakistan to utilize it as we see their vast utilization in other countries as food, fodder and fertilizer as well as in medicine and phycocolloid industries. Systematic scientific evaluation of algae to isolate and identify their secondary metabolites started in the earliest part of 20th century as a result, a new branch of phycology has been established as phycochemistry (Shameel, 1990). It deals with the study of natural products, secondary...

The brown seaweeds occupy a large area of Pakistan Coast and nearby continental shelf with a large EEZ of 200 sq km up to a depth of 110 m and show great variation in type and species. Most of the studies made in the past, were either on the taxonomy of brown seaweeds from the foregoing literature survey, it becomes apparent that most of the above mentioned studies were either on the taxonomy of brown seaweeds growing at the coast of Karachi or on ecological surveys about them, but such investigations lack information about their anatomy. There is a great lacuna of knowledge circumscribing...