Survey records of the project: “A day in the life of spinner dolphins” inshore of Hualien, eastern Taiwan|臺灣花蓮近海飛旋海豚的一天調查紀錄

Latest version published by Kuroshio Ocean Education Foundation on 03 January 2024 Kuroshio Ocean Education Foundation
Publication date:
03 January 2024
CC-BY 4.0

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中文版成果報告請見: https://www.kuroshio.org.tw/newsite/article02.php?info_id=975

In 2007, the project titled, “A day in the life of spinner dolphins,” aimed to propose a research plan to achieve a preliminary understanding of the distribution and behavioral ecology of spinner dolphins (Stenella longirostris (Gray, 1828)) inshore of Hualien, eastern Taiwan. This was achieved by conducting systematic observations and behavioral recordings, by studying the dolphins throughout day without causing any disturbance to them. The acquired dataset includes all the cetacean sighting records of this study.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 32 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Yao C, Hu C (2024): Survey records of the project: “A day in the life of spinner dolphins” inshore of Hualien, eastern Taiwan|臺灣花蓮近海飛旋海豚的一天調查紀錄. v1.3. Kuroshio Ocean Education Foundation. Dataset/Occurrence. https://ipt.taibif.tw/resource?r=a_day_of_spinner_dolphins&v=1.3


Researchers should respect the following rights statement:

The publisher and rights holder of this work is Kuroshio Ocean Education Foundation. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 009b9004-7e65-4873-84a9-e1978dd7dee3.  Kuroshio Ocean Education Foundation publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Taiwan Biodiversity Information Facility.


Occurrence; citizen-science; sighting data; cetacean


Chiou-Ju Yao
  • Originator
National Museum of Natural Science
No. 1, Guanqian Rd., North Dist.
404023 Taichung City
Chieh-Hsi Hu
  • Metadata Provider
  • Originator
  • Point Of Contact
Cetacean researcher
Kuroshio Ocean Education Foundation
No.170, Jhongmei Rd.
97061 Hualien County

Geographic Coverage

Inshore of Hualien, eastern Taiwan.

Bounding Coordinates South West [23.712, 121.591], North East [24.317, 121.799]

Taxonomic Coverage


Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Cetacea
Family Kogiidae, Delphinidae, Hyperoodontidae, Physeteridae

Temporal Coverage

Start Date / End Date 2007-07-21 / 2007-09-21

Sampling Methods

For each trip, there were four observers divided into two groups, with each group consisting of two observers and two recorders. The dolphins were observed and recorded hourly by each group alternately. However, when cetaceans were sighted, group members, who were on a break, recorded videos and captured photographs. In total, 15 surveys were conducted, with an estimated average effort per trip of 6–8 h.

Study Extent Inshore of Hualien, eastern Taiwan.
Quality Control Following electronic data entry, the records underwent a data cleaning process by a trained cetacean researcher of Kuroshio Ocean Education Foundation. All the scientific names of cetaceans were validated by the NomenMatch tool, which compared the names to the taxonomy backbones of Global Biodiversity Information Facility, Catalogue of Life, Taiwan Catalogue of Life, and Taiwan Biodiversity Network before adding them to the database. Geolocations were transformed into decimal degrees and verified by the QGIS 3.10 (long-term release) software.

Method step description:

  1. During the transect surveys, the boat speed was maintained at 8–10 knots. Upon sighting the cetaceans, the species, number of individuals, time, and geographical coordinates (longitude and latitude) were recorded in a record sheet.
  2. When a group of spinner dolphins was sighted during a transect survey, the transect survey was terminated, and the dolphin group was then tracked using the focal animal sampling method.

Additional Metadata

eventDate: The sighting date-time of the occurrence. The time in eventDate implies the beginning of the cetacean observation. Mother-calf pairs count: Counted by recording the number of mother-calf pairs observed in the cetacean group. Mixed species: Recorded by recording the scientific name of other cetacean species observed in a single cetacean sighting.

Alternative Identifiers 009b9004-7e65-4873-84a9-e1978dd7dee3