Dataset

CAS Invertebrate Zoology (IZ)

OBIS USA Open in mapper Explore occurrences

The electronic catalog of the invertebrate zoology collection at the California Academy of Sciences, San Francisco.

Published: February 02, 2026 at 22:52

URL: http://ipt.calacademy.org:8080/resource?r=invz

270,582
occurrence records
18,279
taxa
14,920
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 131,307
48.5%
decimalLatitude 26,864
9.9%
decimalLongitude 26,870
9.9%
eventDate 24,990 37
9.2%
maximumDepthInMeters 214,006 1
79.1%
minimumDepthInMeters 132,190 2
48.9%
occurrenceStatus 270,582
100.0%
scientificName 61
0.0%
scientificNameID 270,582
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 132,192
48.9%
ON_LAND 33,983
12.6%
NO_COORD 26,870
9.9%
NO_MATCH 18,292
6.8%
NOT_MARINE 13,784
5.1%
DEPTH_EXCEEDS_BATH 13,041
4.8%
NO_ACCEPTED_NAME 1,645
0.6%
MARINE_UNSURE 1,637
0.6%
WORMS_ANNOTATION_RESOLVABLE 414
0.2%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 30
0.0%
DATE_IN_FUTURE 24
0.0%
DATE_BEFORE_MIN 13
0.0%
DEPTH_OUT_OF_RANGE 3
0.0%
ZERO_COORD 1
0.0%

Measurement types

DNA derived data