Don't want to see ads? Sign up...
| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | |
| 1 | Sessilia | Balanidae | Barnacle | Diente de Perro | Balanus glandula | |
| 2 | Decapoda | Aeglidae | Cangrejo de Río | Aegla neuquensis | ||
| 3 | Grapsidae | Southwestern Atlantic | Cangrejo Granuloso | Neohelice granulata | ||
| 4 | Ocypodidae | Fiddler Crab | Cangrejo Violinista | Leptuca uruguayensis | ||
| 5 | Portunidae | Cangrejo Nadador | Ovalipes trimaculatus | |||
| 6 | Varunidae | Cyrtograpsus altimanus | ||||
| 7 | Cangrejo de las Rocas | Cyrtograpsus angulatus | ||||
| 8 | Isopoda | Armadillidiidae | Pill-Bug | Bicho Bolita | Armadillidium vulgare |