Sea fir, also known as Dasya, is a type of red algae found in coastal areas around the world. This unique marine plant plays a crucial role in marine ecosystems. With its vivid pink to red color, sea fir adds a pop of brightness and beauty to shallow waters. Synonyms for sea fir include "red algae", "seaweed", and "marine fern". These terms reflect the similar characteristics and habitats shared by these marine plants. Despite their fragile appearance, sea firs serve as a vital food source for various marine organisms and also contribute to oxygen production. Their presence enhances the biodiversity and overall health of marine ecosystems.