Group;"Global diversity";"Regional diversity";"Local diversity (Galiano Island)";Note "Sponges (Porifera)";"9,452 species";"300–400 species (BC);70 species (Salish Sea)";"40 species";  "Cnidarians (Cnidaria)";"12,000 species";"600 species (Pacific NA);200 species (BC)";"77 species";  "Ctenophores (Ctenophora)";"150–200 species";"32 species (Pacific NA);13 species (Salish Sea)*";"4 species";"*only 5 or 6 taxa commonly occur in the Salish Sea" "Ribbon worms (Nemertea)";"> 1,300 species";"41 species (BC);30 species (Salish Sea)";"6 species";  Flatworms(Platyhelminthes);"13,000 marine species*";"> 170 species (BC)";"2 species";"*this estimate does not account for cryptic parasitic species (e.g. Trematodes, (> 18,000 taxa)" "Arrow worms (Chaetognatha)";"130 species";"6 species (NEP);4 species (BC)1–2 species (Salish Sea)";?*;"*chaetognaths in the Galiano Island record remain undetermined to species" "Molluscs (Mollusca)";"49,000 species*";"780 species (BC)";214 species;"*global estimate incl. both terrestrial and marine spp; regional and local richness incl. only marine spp." "Ringed worms (Annelida)";"> 13,000 species";"> 450 species (BC);860 species (Salish Sea)*";"46 species";"*known regional diversity vastly underestimates true richness" "Peanut worms (Sipuncula)";"150 species";"8 species (NEP)";"1 species";  "Crustaceans (Crustacea)";"52,000 species*";"900 species (BC)";"86 species";"*global estimate incl. both terrestrial and marine spp; regional and local richness incl. only marine spp." "Nodding-heads (Entoprocta)";"253 species";"11 species (BC)";"1 species";  "Lampshells (Brachiopoda)";"400 species";"7 species (BC);3 species (Salish Sea)";"1 species";  "Bryozoans (Bryozoa)";"> 6,000 species";"210–260 species (BC)";"17 species";  "Horseshoe worms (Phoronida)";"13 species";"6 species (NEP)";"1 species";  "Echinoderms (Echinodermata)";"> 7,000 species";"111 species (BC)";"41 species";  "Tunicates (Tunicata)";"2,815 species";"71 species (BC)";"33 species";  "Ray-finned and cartilaginous fish (Actinopterygii & Chondrichthyes)*";"> 33,000 species> 1,100 species";"> 1,500 species (Pacific NA);400 species (BC)";"82 species";"*diversity estimates for Actinopterygii and Chondrichthyes are combined in regional and local summaries" "Mammals (Mammalia)";"6,400 species";"22 species (Salish Sea)";"13 species";