Table 1. Biotic diversity of the six U.S. geographically-based sections in the text.

Taxonomic group	Northeast U.S. Continental Shelf LME	Southeast U.S. Continental Shelf LME	Gulf of Mexico	Insular-Pacific Hawaii LME	California Current LME	High Arctic (not exclusively the U.S.)
Domain Archaea	UD	UD	UD	UD	UD	UD
Domain Bacteria (including Cyanobacteria)	10 (9)	48 (16)	UD (45)	UD (183)	UD	UD
Domain Eukarya	5,032	4,229	15,374	8,244	10,160	5,925
Kingdom Chromista	376	217	1,034	175	187	287
Phaeophyta	154	217	86	84	187
Kingdom Plantae	246	113	967	821	703	150
Chlorophyta	98	65	195	247	139
Rhodophyta	148	38	392	574	557
Angiospermae	UD	10	380	UD	7
Kingdom Protoctista (Protozoa)	51	165	2,169	798	896	759
Dinomastigota (Dinoflagellata)	49		644	43	UD	70
Foraminifera	2	165	951	755	670	325
Kingdom Animalia	4,359	3,734	11,150	6,395	8,374	4,729
Porifera	36	111	339	144	134	163
Cnidaria	212	362	792	460	400	227
Platyhelminthes	77		705	676	1389	134
Mollusca	868	698	2455	1345	663	488
Annelida	689	400	866	343	830	533
Crustacea	810	696	2579	1325	2680	1525
Bryozoa	138	91	266	168	150	331
Echinodermata	138		522	309	290	151
Urochordata (Tunicata)	44	35	102	102	62	64
Other invertebrates	173	41	549	228	733	600
Vertebrata (Pisces)	954	1200	1541	1214	909	415
Other vertebrates	220	100	434	81	134	98
TOTAL REGIONAL DIVERSITY 3	5,042	4,277	15,419	8,427	10,160	5,925

Values are number of species^1,2. See Table S1 for more details.

Notes:

¹Sources of the reports: databases, scientific literature, books, field guides, technical reports, and personal communication with taxonomic experts.

²Identification guides cited in Text S2.

³Includes all taxonomic groups as reported in Table S1.

UD  =  Listed in work but number undetermined to date; because taxonomic units in ICoMM are not species, they are not comparable to the data presented here and so are not included.