Sea grape or seagrape may refer to:
Plants and algae Coccoloba uvifera, a flowering plant native to tropical America, including Florida, the Caribbean and nearby islands Seaweeds in the genus Caulerpa, especially: C. lentillifera, eaten in Southeast Asia C. racemosa Ephedra distachya, a shrub that grows in southern Europe and parts of western and central Asia Halosaccion glandiforme, another seaweed unrelated to Caulerpa Valonia ventricosa, an algae and one of the largest known unicellular organisms
Animals Molgula manhattensis, a species of tunicate, or more generally any member of the genus Molgula Salpidae, planktonic, chain-forming tunicates, also known as salps The eggs of cuttlefish