Dataset

Atlantic grey seal breeding colonies in Hay and Saddle Islands, Nova Scotia

OBIS-SEAMAP Open in mapper Explore occurrences

Original provider: Duke Marine Robotics and Remote Sensing Lab Dataset credits: Duke Marine Robotics and Remote Sensing Lab Abstract: These RGB mosaics and thermal indices of Atlantic grey seal colonies at Hay and Saddle Island, Nova Scotia, were collected by small unmanned aircraft systems (UAS). The mosaics and thermal indices were assessed by human analysts, who counted the seals in the mosaic and classified individuals as 'young of the year' or 'adult'. Concurrently, an automated detection and classification model was applied to the datasets and compared to human counts.

Citation: Seymour, A. 2017. Atlantic grey seal breeding colonies in Hay and Saddle Islands, Nova Scotia. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/a563f231.

Published: October 08, 2025 at 03:25

URL: http://ipt.env.duke.edu/resource?r=zd_1462

Alexander Seymour
Duke University Marine Lab

3,350
occurrence records
1
taxa
1
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 3,350
100.0%
maximumDepthInMeters 3,350
100.0%
minimumDepthInMeters 3,350
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 3,350
100.0%
ON_LAND 3,148
94.0%

Measurement types

DNA derived data