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