Paracentrotus lividus, commonly known as the Mediterranean purple sea urchin, is an edible sea urchin species native to the Mediterranean Sea and the eastern Atlantic coast of Europe. Its distribution extends from the British Isles and western France southward to Morocco, including much of the Mediterranean basin. It inhabits rocky reefs, seagrass meadows, and other shallow coastal environments where algae are abundant.
This species is characterized by a rounded test that ranges from greenish-brown to dark brown in color and is covered with long, slender spines that are often purple or violet. Adults typically reach a test diameter of approximately 5–7 cm, although larger individuals may occasionally occur in favorable habitats.
Paracentrotus lividus has long been harvested as a food resource and is one of the most economically important sea urchin species in the Mediterranean region. Its gonads, commonly known as uni, are highly valued in countries such as Spain, France, Italy, Portugal, and Croatia, where they are consumed both fresh and as ingredients in a variety of traditional dishes.
In Mediterranean cuisine, the roe is often eaten raw directly from the shell, served as an appetizer, or incorporated into pasta, rice dishes, and seafood preparations. It is also used by some sushi restaurants and contemporary seafood establishments, where it may be served as uni sushi or sashimi-style uni.
When consumed raw, the roe is generally noted for its creamy texture and balanced combination of sweetness, brininess, and umami. These characteristics have made Paracentrotus lividus one of the most recognized and widely appreciated edible sea urchin species in Europe.
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