Personal profile
Biography
I’m a Marine Scientist, Spatial Ecologist and Research Fellow at the University of Western Australia, with a keen interest in sharks and conservation. I completed my PhD at Murdoch University with the co-affiliations at the Monterey Bay Aquarium, California and the Dyer Island Conservation Trust, South Africa. I have a broad interest in marine megafauna and have specialised in tracking their movements using a variety of techniques. My most prominent study species have been Great White Sharks (Honours, Masters and PhD) and Tiger Sharks (Postdoc), although I've also worked with other sharks, rays, fish, turtles, mammals and benthos at various locations in Western Australia, South Africa, Europe and California.
Education/Academic qualification
Conservation Science, PhD, Global Seascape Ecology of the White Shark, Murdoch University
18 Jun 2017 → 16 Nov 2021
Award Date: 12 Feb 2022
Zoology, MSc, Foraging Ecology of white sharks Carcharodon carcharias at Dyer Island, South Africa, University of Pretoria
Award Date: 19 Apr 2013
Oceanography, BSc (Hons), The White Shark-Carcharodon Carcharias: Observations on Biology and Behaviour from a Cage Diving Vessel Gansbaai, South Africa 2007, University of Southampton
Award Date: 9 Jul 2008
External positions
Oceans Lead, Environment Committee, WA, UNAA
20 Feb 2022 → …
Research expertise keywords
- Biologging
- Telemetry
- Movement Ecology
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 14 Life Below Water
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Collaborations and top research areas from the last five years
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Vulnerability of marine megafauna to global at-sea anthropogenic threats
Vulnerability of marine megafauna consortium, Feb 2026, In: Conservation Biology. 40, 1, 25 p., e70147.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Citation (Scopus) -
Global tracking of marine megafauna space use reveals how to achieve conservation targets
Global tracking of marine megafauna, Sequeira, A. M. M., Rodríguez, J. P., Marley, S. A., Calich, H. J., van der Mheen, M., VanCompernolle, M., Arrowsmith, L. M., Peel, L. R., Queiroz, N. & Vedor, M., 5 Jun 2025, In: Science. 388, 6751, p. 1086-1097 12 p.Research output: Contribution to journal › Article › peer-review
Open Access20 Link opens in a new tab Citations (Scopus) -
Transoceanic dispersal and connectivity of a white shark (Carcharodon carcharias) between southern Africa and Southeast Asia
Irion, D. T., Jewell, O. J. D., Towner, A. V., Fahmi, Fischer, G. C., Gennari, E., Stewart, M., Tyminski, J. P. & Kock, A. A., 20 Jun 2025, In: Wildlife Research. 52, 6, WR24145.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Citation (Scopus) -
Diverse habitats shape the movement ecology of a top marine predator, the white shark Carcharodon carcharias
Jewell, O. J. D., Chapple, T. K., Jorgensen, S. J., Kanive, P., Moxley, J. H., Tweedley, J. R., Anderson, S., Block, B. A. & Gleiss, A. C., Apr 2024, In: Ecosphere. 15, 4, 20 p., e4825.Research output: Contribution to journal › Article › peer-review
Open Access7 Link opens in a new tab Citations (Scopus) -
Back to the wild: movements of a juvenile tiger shark released from a public aquarium
Jewell, O., D'Antonio, B., Blane, S., Gosden, E., Taylor, M., Calich, H., Fraser, M. & Martins Sequeira, A., Sept 2023, In: Journal of Fish Biology. 103, 3, p. 735-740 6 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Link opens in a new tab Citation (Scopus)2 Downloads (Pure)