Palmaria palmata, also called dulse, dillisk or dilsk (from Irish / Scottish Gaelic duileasc / duileasg), red dulse, sea lettuce flakes, or creathnach, is a red alga (Rhodophyta) previously referred to as Rhodymenia palmata. It grows on the northern coasts of the Atlantic and Pacific Oceans. It is a well-known snack food.

Dulse, known scientifically as Palmaria palmata, is a type of red seaweed found on the northern coasts of the Atlantic and Pacific Oceans. It primarily grows in cold waters on rocky coasts, and can even be located as far north as the Arctic Circle. Dulse is one of the more aesthetically pleasing seaweeds, with a deep crimson color.

Palmaria palmata (Dulse / Dillisk / Dilsk) Characteristics Palmaria palmata is a red algae of the family Palmariaceae that is commonly found along the northern coasts of the Atlantic and Pacific Oceans. It is considered an important alternative food source and delicacy and has been harvested for this purpose for centuries.