| Subject | English | Spanish |
| life.sc. | bivalve molluscs | almejas (Bivalvia, Lamellibranchia, Pelecypoda) |
| life.sc. | bivalve molluscs | moluscos bivalvos (Bivalvia, Lamellibranchia, Pelecypoda) |
| gen. | bivalve molluscs | bivalvos (Bivalvia, Lamellibranchia, Pelecypoda) |
| nat.res., fish.farm. | cephalopod mollusc | cefalópodo |
| fish.farm. | classification of bivalve mollusc harvesting areas | clasificación de las zonas de recolección de los moluscos bivalvos |
| agric. | cleaning plant for molluscs | planta depuradora de moluscos |
| fish.farm. | coastal farm for molluscs | explotación litoral para moluscos |
| nat.sc. | fresh water mollusc | molusco de río |
| nat.res., fish.farm. | lithophagous mollusc | litófago |
| life.sc., fish.farm. | lithophagous mollusc | dátil de mar (Lithophaga lithophaga, Lithodomus lithophagus) |
| nat.res., fish.farm. | marine molluscs | moluscos marinos (Mollusca) |
| life.sc., fish.farm. | marine molluscs n.e.i. | moluscos marinos nep (-) |
| life.sc., fish.farm. | marine molluscs n.e.i. | moluscos marinos (-) |
| patents. | meat, fish, non-living molluscs and crustaceans, poultry and game | carne, pescado, moluscos y crustáceos que no estén vivos, aves y caza |
| agric. | mollusc detaching | separación de moluscos |
| environ. | mollusc invasion | invasión de moluscos |
| agric., chem. | mollusc killer | molusquicida |
| agric., chem. | mollusc killer | helicida |
| patents. | non-living molluscs and crustaceans | moluscos y crustáceos que no estén vivos |
| agric. | sea mollusc | molusco de mar |
| agric. | sea water mollusc | molusco de mar |