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. 2011 May 25;6(5):e19795. doi: 10.1371/journal.pone.0019795

Table 1. Species abundance and record counts across 22 recorded phyla.

Phylum Species Count Record Count
Crustaceans 283 4767
Nematodes 170 460
Annelids 147 725
Molluscs 161 588
Echinoderms 119 1160
Chordates 114 8201
Bryozoans 112 354
Chelicerates 93 530
Sponges 81 294
Cnidarians 78 358
Platyhelmenthes 33 52
Nemertea 15 60
Acanthocephala 12 19
Chaetognatha 5 92
Entoprocts 5 n/a
Sipuncula 4 55
Tardigrades 3 4
Brachiopods 3 3
Cephalorhyncha 2 4
Hemichordates 2 n/a
Ctenophora 2 n/a
Echiura 1 6
Total 1445 17732