| OC | ||
| Tanga | kuka | crayfish; ritual form of the ordinary word for crayfish |
| Arosi | kuka | a crab (generic) |
| Samoan | ʔuʔa | common mangrove crab (Sesarma sp.) |
| Wayan | kuka | crab, small edible hairy grapsid with black carapace and red claws; found in mangrove swamps |
| Fijian | kuka | a small red and black mangrove crab |
| Tongan | kuka | kind of crab |
| Tolai | kuka | a generic word for crabs, Cancer spp. |