The ambition with these pages is to provide in-depth, scientifically correct information on the species I see and photograph.

Taxonomy, in general, is the practice and science of classification of things or concepts, including the principles that underlie such classification.

In biology, taxonomy is the science of naming, defining (circumscribing) and classifying groups of biological organisms on the basis of shared characteristics.

Organizing this information on a website requires a certain structure to the permalinks. The page you are reading right now is the parent page for the pages dedicated to each species, organised in the following URL-structure:

  • oceanus.no/species (this page)
  • oceanus.no/species/taxonomic-name


  • oceanus.no/species/aplysia-punctata

Species by taxonomic name – (common name):

  1. Agonus cataphractus (Hooknose)
  2. Aplysia punctata – (Sea hare)
  3. Coryphella verrucosa
  4. Dendronotus frondosus (Bushy backed nudibranch)
  5. Fjordia lineata
  6. Limacia clavigera (orange-clubbed sea slug)
  7. Polycera quadrilineata

The list is extended regularly.