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: May 11, 2026 at 22:53

First registration: October 14, 2022 at 13:05

License: To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0)

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

Contacts:

Christina Piotrowski
California Academy of Sciences

271,822
occurrence records
18,292
taxa
14,920
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 132,011
48.6%
decimalLatitude 27,331
10.1%
decimalLongitude 27,336
10.1%
eventDate 25,027 38
9.2%
maximumDepthInMeters 214,998 1
79.1%
minimumDepthInMeters 132,664 2
48.8%
occurrenceStatus 271,822
100.0%
scientificName 59
0.0%
scientificNameID 271,822
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 132,666
48.8%
ON_LAND 34,134
12.6%
NO_COORD 27,337
10.1%
NO_MATCH 18,336
6.7%
NOT_MARINE 13,887
5.1%
DEPTH_EXCEEDS_BATH 13,193
4.9%
NO_ACCEPTED_NAME 1,658
0.6%
MARINE_UNSURE 1,638
0.6%
WORMS_ANNOTATION_RESOLVABLE 414
0.2%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 30
0.0%
DATE_IN_FUTURE 24
0.0%
DATE_BEFORE_MIN 14
0.0%
DEPTH_OUT_OF_RANGE 3
0.0%
ZERO_COORD 1
0.0%

Measurement types

DNA derived data