Seagrapes (Coccoloba uvifera (L.) Linnaeus) are large shrubs/small trees thought native to southern Florida and nearby Caribbean islands. Drought and salt-tolerant, the plants have naturalized from Mexico south to northeastern Brazil and along the Pacific coast south to Peru.

Seagrapes are seldom found far inland, preferring the open sunny areas along dunes. The plants colonize disturbed land. Seedlings will not survive shade even light shade from plants like grasses.

Seagrapes are members of the Polygonaceae, the buckwheat family. Linnaeus named seagrapes twice. Its first botanical name was Polygonum uvifera in 1753 placing it among the smart weeds. Patrick Browne established the genus Coccoloba and the seagrape was misnamed Coccolobis uvifera by Nickolaus Joseph von Jacquin. Linnaeus came back in 1759 correcting the name to Coccoloba uvifera. The generic name came from cocolobis, a type of Spanish grape; uvifera means "bearing grapes".

Seagrapes begin flowering when six to eight years old. Male and female flowers are borne on separate plants. The flowers and fruit are borne on dangling racemes and superficially resemble clusters of grapes. The edible fruit turns purple when ripe and is an important food source for birds, mammals, and Caribbean iguanas.