Research Publications

Explore our collection of peer-reviewed publications that showcase cutting-edge marine research. From shark ecology to conservation strategies, these studies reflect our commitment to advancing ocean science and informing sustainable management of marine ecosystems worldwide.

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Global tracking of marine megafauna space use reveals how to achieve conservation targets

Dr. Christopher Clarke & co-authors as part of a global collaboration published in Science Journal (see article for full list)

Journal of Science (2025)

This study presents a global analysis of marine megafauna movements to inform and enhance ocean conservation strategies....

Humpback Whales Blow Poloidal Vortex Bubble Rings

Fred Sharpe, Jodi Frediani, Josephine Hubbard, Doug Perrine, Simon Hilbourne, Joy S. Reidenberg, Laurance R. Doyle, Brenda McCowan

Marine Mammal Science (2025)

This study presents the first detailed documentation of poloidal vortex bubble rings created by humpback whales. Analysis of 12 events involving 11 individual whales revealed 39 rings, produced in various contexts...

Microenvironments of black-tip reef sharks provide niche habitats for distinct bacterial communities

Pogoreutz, C., Gore, M., Perna, G., Clarke, C.R., et al.

Coral Reefs (2024)

This study investigates the microbiome communities associated with black-tip reef sharks and reveals distinct bacterial profiles that correspond with specific microhabitats occupied by these animals....

Ontogenetic shifts in home range size of a top predatory reef-associated fish

Daly, R., Filmalter, J.D., Peel, L.R., Mann, B.Q., Lea, J.S.E., Clarke, C.R., Cowley, P.D.

Marine Ecology Progress Series (2021)

This research quantifies how the spatial ecology of Caranx ignobilis, a key apex predator on tropical reefs, changes throughout its ontogeny....

Shark mortality cannot be assessed by fishery overlap alone

Queiroz, N., Humphries, N.E., Couto, A., Clarke, C.R., et al.

Nature (2021)

In this correspondence, the authors respond to critiques of their earlier work on global shark risk by emphasizing the necessity of integrating comprehensive ecological...

At the Turn of the Tide: Space Use and Habitat Partitioning in Two Sympatric Shark Species Is Driven by Tidal Phase

Lea, J.S.E., Humphries, N.E., Bortoluzzi, J., Daly, R., von Brandis, R., Patel, E., Clarke, C.R., Sims, D.W.

Frontiers in Marine Science (2020)

This study explores the influence of tidal cycles on the spatial behaviour of two sympatric reef shark species. Using high-resolution acoustic telemetry, researchers identified significant temporal and spatial niche partitioning driven by tidal phases. ...

Application of Photo-Identification and Lengthened Deployment Periods to Baited Remote Underwater Video Stations (BRUVS) Abundance Estimates of Coral Reef Sharks

Gore, M., Ormond, R., Clarke, C.R., Kohler, J., Millar, C., Brooks, E.

Oceans (2020)

This study assesses the efficacy of combining photo-identification and extended deployment durations in BRUVS to estimate shark populations more accurately. ...

Life after death: behaviour of multiple shark species scavenging a whale carcass

Lea, J.S.E., Daly, R., Leon, C., Daly, C.A.K., Clarke, C.R.

Marine and Freshwater Research (2019)

This unique study documents the scavenging behaviour of multiple shark species attracted to a drifting whale carcass in the Indian Ocean....

Movement and residency patterns of reef manta rays Mobula alfredi in the AmIrante Islands, Seychelles

Peel, L.R., Stevens, G.M.W., Daly, R., Daly, C.A.K., Lea, J.S.E., Clarke, C.R., Collin, S.P., Meekan, M.G.

Marine Ecology Progress Series (2019)

This study provides a detailed analysis of reef manta ray movements around the AmIrante Islands using photo-identification and satellite tagging techniques....

Inner space: translating advances in human medicine to minimise the invasiveness of marine tagging procedures

Patel, E., Lea, J.S.E., Clarke, C.R.

Animal Biotelemetry (2019)

This article reviews and proposes innovations in marine animal tagging, drawing from advances in human medical practices to improve surgical implantation techniques....

Similar bacterial communities on healthy and injured skin of black-tip reef sharks

Pogoreutz, C., Gore, M.A., Perna, G., Millar, C., Nestler, R., Ormond, R.F., Clarke, C.R., Voolstra, C.R.

Animal Microbiome (2019)

This study investigates the microbial communities present on the skin of black-tip reef sharks and compares profiles from healthy and visibly injured individuals....

Global spatial risk assessment of sharks under the footprint of fisheries

Queiroz, N., Humphries, N.E., Couto, A., Clarke, C.R., et al.

Nature (2019)

This landmark study integrates satellite tracking data from 23 shark species across the globe to identify areas where they are at greatest risk from commercial fishing activity....

Refuges and risks: Evaluating the benefits of an expanded MPA network for mobile apex predators

Daly, R., Smale, M.J., Singh, S., Anders, D., Shivji, M.J., Daly, C.A.K., Lea, J.S.E., Sousa, L.L., Wetherbee, B., Fitzpatrick, R., Clarke, C.R., Sheaves, M., Barnett, A.

Diversity and Distributions (2018)

This research investigates the effectiveness of marine protected area (MPA) networks in safeguarding highly mobile shark and ray species....

Acoustic telemetry and network analysis reveal the space use of multiple reef predators and enhance marine protected area design

Lea, J.S., Humphries, N.E., von Brandis, R.G., Clarke, C.R., Sims, D.W.

Proceedings of the Royal Society B (2016)

This paper employs acoustic telemetry and network analysis to examine spatial use and interactions among multiple reef predator species....

To Madagascar and back: Long-distance, return migration across open ocean by a pregnant female bull shark Carcharhinus leucas

Lea, J.S.E., Humphries, N.E., Clarke, C.R., Sims, D.W.

Journal of Fish Biology (2015)

This study documents the first known round-trip migration of a pregnant bull shark across more than 4,000 kilometres between Seychelles and Madagascar....

Global mitochondrial DNA phylogeography and population structure of the silky shark, Carcharhinus falciformis

Clarke, C.R., Karl, S.A., Horn, R.L., Bernard, A.M., Lea, J.S.E., Hazin, F.H., Prodöhl, P.A., Shivji, M.S.

Marine Biology (2014)

This genetic study investigates the global population structure of silky sharks using mitochondrial DNA sequence data from multiple ocean basins....

Changing relative abundance and behaviour of silky and grey reef sharks baited over 12 years on a Red Sea reef

Clarke, C.R., Lea, J.S.E., Ormond, R.F.G.

Marine and Freshwater Research (2013)

This long-term study tracks changes in the relative abundance and behaviour of silky and grey reef sharks at a baited site in the Red Sea over a 12-year period....

Comparative abundance of reef sharks in the Western Indian Ocean

Clarke, C.R., Lea, J.S.E., Ormond, R.F.G.

Proceedings of the 12th International Coral Reef Symposium (2012)

This study presents a comparative analysis of reef shark abundance across multiple sites in the Western Indian Ocean using baited remote underwater video systems....

Reef-use and residency patterns of a baited population of silky sharks, Carcharhinus falciformis, in the Red Sea

Clarke, C.R., Lea, J.S.E., Ormond, R.F.G.

Marine and Freshwater Research (2011)

This research investigates spatial behaviour and site fidelity in a population of silky sharks using long-term baiting and acoustic telemetry in the central Red Sea....

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