The Royal Belgian Institute of Natural Sciences Brachiopoda collection contains 329 digitised specimens over 30 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Articulata Huxley, 1869, Inarticulata Huxley, 1869.

The Royal Belgian Institute of Natural Sciences Cnidaria collection contains 5754 digitised specimens over 281 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Gastropoda Cuvier, 1797, Hydrozoa Owen, 1843.

The Royal Belgian Institute of Natural Sciences Echinodermata collection contains 4275 digitised specimens over 403 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Asteroidea de Blainville, 1830, Crinoidea, Echinoidea Leske, 1778, Holothuroidea De Blainville, 1834, Ophiuroidea Gray, 1840.

The Royal Belgian Institute of Natural Sciences Vertebrates/Types collection contains 283 digitised specimens over 70 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Actinopterygii, Aves, Chondrichtyes, Mammalia Linnaeus, 1758.

The Royal Belgian Institute of Natural Sciences Pisces collection contains 3342 digitised specimens over 485 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Actinopterygii, Cephalaspidomorphi, Cephalochordata Owen, Chondrichtyes, Myxini, Sarcopterygii.

The Royal Belgian Institute of Natural Sciences Mollusca collection contains 55526 digitised specimens over 1702 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Articulata Huxley, 1869, Bivalvia, Bivalvia Linnaeus, 1758, Cephalopoda Cuvier, 1797, Gastropoda Cuvier, 1797, Heliozoa, Hydrozoa Owen, 1843, Insecta Linnaeus, 1758, Malacostraca Latreille, 1802, Maxillopoda Dahl, 1956, Monoplacophora, Polychaeta, Polyplacophora Gray, 1821, Scaphopoda Bronn, 1862.

The Royal Belgian Institute of Natural Sciences Bird Collection contains 5242 digitised specimens over 149 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Aves.

The Royal Belgian Institute of Natural Sciences Marine Chelicerata Collection contains 443 digitised specimens over 30 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Malacostraca Latreille, 1802, Merostomata, Pycnogonida Latreille, 1810.

The Royal Belgian Institute of Natural Sciences Mammalia collection contains 650 digitised specimens over 56 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Mammalia Linnaeus, 1758, Reptilia Laurenti, 1768.

The Royal Belgian Institute of Natural Sciences Reptilia collection contains 211 digitised specimens over 24 taxa (mostly species). This dataset only contains the marine species of the collection. The following classes are included: Reptilia Laurenti, 1768.