Carpobrotus chilensis, commonly known as the Chilean sea fig or Chilean ice plant, is a mat-forming succulent perennial in the family Aizoaceae. Native to the coastal regions of South Africa, it has become widely naturalized across the Pacific coasts of North and South America, particularly in California and Chile. The genus name Carpobrotus is derived from the Greek karpos ("fruit") and brota ("edible"), highlighting its historical significance as a food source. The species epithet chilensis reflects the mistaken early belief that it originated in Chile. Historically, it was a crucial, highly valued seasonal resource for indigenous peoples in both its native and naturalized ranges, often used to stabilize coastal dunes and provide hydration in arid environments.

The plant is characterized by its trailing, rapidly spreading stems and thick, fleshy, three-angled leaves that grow in opposite pairs. It produces large, showy, daisy-like flowers with numerous bright, magenta-to-purple petals and a prominent yellow center, which bloom primarily in the spring and summer. Following pollination, the plant develops a fleshy, barrel-shaped fruit that ripens from green to a yellowish-red or reddish-purple as it matures. The internal pulp is gelatinous and embedded with numerous small, hard seeds. Carpobrotus chilensis is extremely salt-tolerant and thrives in sandy, nutrient-poor coastal soils, often forming dense, carpets that prevent erosion, though it is frequently managed as an invasive species in sensitive coastal dune ecosystems.

The fruit of the sea fig is celebrated for its surprising, complex, and sweet-salty flavor profile, often compared to a blend of strawberry, kiwi, and salty sea spray. The ripe fruit is traditionally consumed by squeezing the succulent pulp directly into the mouth, discarding the tough, fibrous outer skin. The pulp is highly juicy and can be used to prepare jams, jellies, or syrups, which are prized for their unique, slightly saline undertones. The thick, succulent leaves are also technically edible, though they are intensely salty and primarily used in small amounts to provide a natural, mineral-rich "salted" accent to salads or preserved as a piquant, pickled green.

Nutritionally, the sea fig is a unique source of dietary minerals, particularly sodium, potassium, and magnesium, owing to its halophytic (salt-tolerant) nature. It is rich in Vitamin C and contains a diverse array of specialized secondary metabolites, including flavonoids and tannins, which contribute to its antioxidant profile. In traditional ethnobotanical medicine, the juice extracted from the leaves was frequently utilized as a topical treatment for sunburns, insect stings, and minor skin abrasions, thanks to its cooling, astringent, and soothing properties. Modern pharmacological research is exploring the plant's potential for its antimicrobial activities and the role of its high antioxidant content in mitigating oxidative stress.