Himanthalia elongata wholeleaf is a brown alga in the order Fucales, also known by the common names thongweed, sea thong and sea spaghetti. It is found in the north Atlantic Ocean and the North Sea.
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H. elongata is a common brown alga of the lower shore. The thallus is at first a small flattened or saucer-shaped disc up to three centimetres wide with a short stalk. In the autumn or winter, long thongs grows from the centre of this, branching dichotomously a number of times. They grow fast and can reach up to two metres by the following summer when they become mature. They bear the conceptacles, the reproductive organs, and begin to decay when the gametes have been released into the water. The discs live for two or three years.
All Emerald Isle Seaweed has be tested for chemical, pesticides and water quality.
Sea Spaghetti sometimes called Chorda Filum. The plants are usually darker and twisted together. The Sea Spaghetti can be cut into small lengths soaked in water and used in salads. You can also air dry the seaweed and cut into lengths for packaging.