- LIFE SCIENCES
- behaviour and psychology
- biology
- ecology
- organisms
- organisms, by non-taxonomic groups
- organisms, taxonomically arranged
- animals
- Chordata
- invertebrates
- Acanthocephala
- Annelida
- arthropods
- Brachiopoda
- Chaetognatha
- Cnidaria
- Ctenophora
- Echinodermata
- Echiuroidea
- Ectoprocta
- Endoprocta
- Mollusca
- Nematoda
- Nematomorpha
- Nemertea
- Parazoa
- Phoronida
- Platyhelminthes
- Cestoda
- Monogenea
- Trematoda
- Aspidogastrea
- Digenea
- Acanthostomidae
- Allocreadiidae
- Brachylaimidae
- Bucephalidae
- Campulidae
- Clinostomidae
- Cyclocoelidae
- Derogenidae
- Dicrocoeliidae
- Diplostomidae
- Echinostomatidae
- Eucotylidae
- Fasciolidae
- Gastrothylacidae
- Gorgoderidae
- Hemiuridae
- Heterophyidae
- Isoparorchiidae
- Lecithasteridae
- Lecithodendriidae
- Maseniidae
- Microphallidae
- Monorchiidae
- Nanophyetidae
- Notocotylidae
- Opisthorchiidae
- Paragonimidae
- Paramphistomidae
- Philophthalmidae
- Plagiorchiidae
- Prosthogonimidae
- Psilostomidae
- Sanguinicolidae
- Schistosomatidae
- Strigeidae
- Turbellaria
- Pogonophora
- Protozoa
- Rotifera
- Sipunculoidea
- fungi
- organisms by alternative taxonomic schemes
- organisms of uncertain taxonomy
- plants
- prions
- prokaryotes
- viruses
- animals