Editorial Note: Recent reports of several satellite-tagged white sharks transmitting from within the Gulf of St. Lawrence have generated considerable public and media interest. While these observations are newsworthy, this release is intended to place them within their proper scientific context. The available evidence does not, at present, demonstrate that the 2026 season is exceptional or that the level of risk to the public has materially changed. Its purpose is neither to reassure without evidence nor to cause alarm, but to distinguish documented observations from inference, acknowledge uncertainty, and encourage responsible conduct. Media coverage, particularly headlines, should preserve those distinctions. Media outlets may reproduce this release in whole or in part, provided that its scientific context and intended meaning are retained.

MEDIA CONTACT: No interviews will be granted regarding this release. The media may reproduce in full the content of this text as well as the personal commentary of the Scientific Director of the St. Lawrence Shark Observatory.

Drummondville, QC, July 30, 2026

The St. Lawrence Shark Observatory (ORS) has received numerous requests for interviews following the recent detection of several OCEARCH-tagged [1] white sharks within the Gulf of St. Lawrence. Although the appearance of multiple tagged sharks over a relatively short period has naturally attracted attention, the observations reported to date appear consistent with the seasonal pattern documented during recent summers.

Based on long-term ORS observations and recent peer-reviewed research [2,3], white sharks have become regular seasonal visitors to Québec and Atlantic Canadian waters, particularly in regions supporting abundant grey seal populations. A systematic analysis of acoustic telemetry data identified an increase in the probability of tagged white sharks migrating into Atlantic Canadian waters beginning around 2019, together with a longer seasonal detection period. Although this evidence supports an increase in the species’ use of northern waters, it does not establish how many white sharks are currently in the Gulf or demonstrate that 2026 is unprecedented.

Satellite detections represent only a small fraction of the population

ORS cautions against interpreting the number of satellite-tagged white sharks detected in the Gulf as a direct measure of the total number of sharks present. Only a small, non-random subset of the Northwest Atlantic white shark population carries SPOT tags whose positions can appear on public tracking platforms. The composition of this sample changes as new sharks are tagged and older tags stop transmitting, and it does not necessarily reflect the age or sex composition of the broader population. Other telemetry systems are not represented in the same way: acoustic transmitters register only when sharks pass compatible underwater receivers, while PSAT tags archive data while attached and transmit after detaching and floating to the surface. They therefore do not provide ongoing public positions comparable to those generated by SPOT tags.

A SPOT (Smart Position and Temperature) tag mounted on a dorsal fin transmits to the Argos satellite system only when the tag is at the surface. Calculating a position generally requires consecutive transmissions during a satellite pass, so many surfacing events do not yield a successful location. Transmission schedules, satellite availability, surfacing behaviour, tag condition, and environmental conditions can all affect which positions are recorded.

Consequently, the sharks shown on public tracking platforms represent a valuable but incomplete sample of a broader population. More detections may reflect more active tags or more successful transmissions, not necessarily more sharks in the Gulf. Conversely, an absence of satellite detections is not evidence that white sharks are absent. Although public trackers are useful tools for following tagged individuals, they are not population censuses.

Scientific interpretation

The current detections fit a broader increase in white shark presence documented in Atlantic Canadian waters over the past decade [2,3]. The mechanisms behind that change remain unresolved. Plausible and potentially interacting factors include legal protection and population recovery, changes in the distribution and abundance of grey seals and fish prey, changing oceanographic conditions, redistribution within the Northwest Atlantic, expanding scientific monitoring, and improved public documentation.

Recent research suggests that natural population growth alone is unlikely to explain the speed of the observed increase in Atlantic Canadian detections, which points to an important role for redistribution and environmental change. At the same time, no single factor, including seal abundance or ocean temperature, has been shown to explain the pattern by itself [2]. The 2026 satellite transmissions therefore cannot be used on their own to determine abundance, isolate a cause, or conclude that ecological conditions are unusual.

This distinction matters because presence, detection, and abundance are different measurements. A shark may be present without being detected, a tagged shark may transmit repeatedly, and changes in monitoring effort may alter the number of recorded detections even when the underlying population is unchanged. Comparisons among years must account for those limitations.

White shark ecology is complex and continues to evolve

Based on more than two decades of ORS research, including field investigations, historical and archival work, and ongoing molecular studies, together with archaeological evidence, Indigenous knowledge, and peer-reviewed literature, white sharks are increasingly understood as a long-standing component of the marine environment of Atlantic Canada and the broader Gulf of St. Lawrence region. White shark teeth recovered from mortuary and ceremonial contexts on the Maritime Peninsula date from approximately 5,000 to 950 years before present, supporting a human–shark relationship measured in millennia [4,5]. These sources do not provide a historical abundance estimate, and the species’ distribution and frequency almost certainly varied over time.

For this reason, ORS encourages caution when interpreting, sharing, or relying on simplified explanations of shark behaviour, whether encountered on social media, in news reports, or through other public sources. Marine ecosystems are rarely explained by a single factor, and responsible scientific communication should distinguish clearly between established evidence, informed hypotheses, preliminary observations, and personal opinion.

Shark-related information now circulates rapidly, and the public is often presented with opposing but equally misleading narratives: white sharks are portrayed either as an imminent danger or as completely harmless. Neither extreme reflects the available evidence. White sharks do not exhibit one simple or universally predictable pattern of behaviour. Their actions at any given moment may be influenced by environmental conditions, prey availability, competitors or other attractants, time of day, life stage, prior experience, and individual behavioural differences. No universal set of rules can reliably predict how every shark will behave in every situation.

Recognising uncertainty is not a weakness of science. It is essential to scientific rigour. Interpretations must evolve as new evidence becomes available, and many questions remain about white shark abundance, habitat use, movements, and seasonal ecology in Québec and Atlantic Canada.

Newsworthy does not necessarily mean unusual

The detection of several satellite-tagged white sharks within a short period is newsworthy and provides valuable information about the movements of those individuals. From a scientific perspective, however, the observations appear consistent with a seasonal pattern that has become familiar in recent years. Repeated coverage without that context can unintentionally magnify the perceived novelty of the situation and cause needless alarm. Unsupported reassurance can be equally counterproductive by encouraging complacency.

The statistical risk of a shark-related incident in Canadian waters remains low to very low under most circumstances, but it is not zero and varies with circumstances [5]. Marine users should remain aware of local conditions, avoid large seal concentrations and murky water when practical, pay attention to unusual wildlife behaviour, and consult verified information.

The appropriate response is neither fear nor complacency, but proportionate awareness: understand that white sharks are seasonal visitors, respect the conditions that can increase risk, and make informed decisions when using the marine environment.

Responsible coexistence also requires respecting the animals themselves and the legal protections that apply to them. White sharks are protected under Canada’s Species at Risk Act. They should never be pursued, harassed, baited, intentionally approached, or disturbed for photographs, video, or social-media content [6].

Commentary

Learn more

Readers wishing to better understand sharks and their interactions with humans are encouraged to consult the Canadian Shark Attack Registry and its companion publication, Understanding shark interactions in Canada. Together, these resources provide scientific context, evidence-based incident assessments, behavioural interpretation, risk evaluation, and practical safety guidance for Canadian waters.

By promoting knowledge, respect, and coexistence rather than fear or denial, these resources support both informed public safety and shark conservation.

No interviews on this topic

The St. Lawrence Shark Observatory does not normally participate in media interviews, whether live or recorded, by telephone, video, or in person. As an independent, volunteer-run scientific organisation, ORS communicates primarily through media releases, written statements, and background documents. Exceptions may be considered when a subject is scientifically significant, genuinely new or urgent, and when the organisation’s availability permits.

This written-first approach reflects more than twenty-five years of media experience. It allows complex or evolving information to be reviewed carefully, presented with its full context and nuance, and preserved in a dated, verifiable source. This is particularly important when communicating about white sharks and public safety, where wording can materially affect how risk is understood and where distinctions among established evidence, preliminary observations, informed hypotheses, and uncertainty must remain clear.

A subject may be of legitimate public or media interest without representing a new or exceptional scientific development. ORS therefore assesses requests according to their scientific relevance, urgency, operational commitments, and the practical limits of an all-volunteer organisation. ORS does not comment on shark stories or incidents outside Canada, matters unrelated to its research in the St. Lawrence, or traumatic incidents involving sharks.

When no existing publication adequately addresses a subject, journalists may submit specific questions in writing through the official contact page. ORS may respond when its workload permits: submitting an enquiry does not guarantee a response or an interview. The complete Media Communication Policy is available online.

ORS will continue to monitor white shark activity throughout the season and will issue additional factual updates if scientifically warranted.

Jeffrey Hay Gallant, M. Sc.
Founder and Scientific Director
St. Lawrence Shark Observatory

About the Observatory

The St. Lawrence Shark Observatory (ORS), officially founded in 2003 under the name Greenland Shark and Elasmobranch Education and Research Group (GEERG), is Canada’s first independent shark research organisation and registered charity. Entirely volunteer-run, the ORS is dedicated to the scientific study, conservation, and public understanding of sharks inhabiting the Gulf and Estuary of the St. Lawrence.

In 2025, the organisation commemorated the 25th anniversary of its first field expedition, marking a quarter century of commitment to shark research and conservation in the St. Lawrence and Atlantic Canada. Throughout its history, ORS has achieved numerous Canadian and international firsts in shark research, particularly through its pioneering work on the Greenland shark. In 2022, the ORS also founded the Canadian Shark Attack Registry, Canada’s first scientific initiative dedicated to documenting and assessing shark-human interactions in Canadian waters.

Through innovative, non-invasive research integrating field science, historical archives, archaeology, Indigenous knowledge, and modern molecular techniques, the ORS seeks to advance understanding of sharks, both past and present, while promoting rigorous, evidence-based information free from sensationalism and misinformation. In addition to its research and conservation activities, the organisation is actively involved in public education and outreach, particularly among young people, whom it considers the future custodians of sharks and the oceans.

For more information about the history, mission, research, publications, and team of the St. Lawrence Shark Observatory (ORS), please visit the organisation’s About page.

(1) Public telemetry data available through the OCEARCH Shark Tracker: https://www.ocearch.org/tracker
(2) Allegue, H., Bordeleau, X., Winton, M. V., Skomal, G. B., Joyce, W., Barajas, V. L., Trudel, M., & Bowlby, H. D. (2025). Systematic assessment of the increasing presence of white sharks in Atlantic Canadian waters. Marine Ecology Progress Series, 761, 145–161.
(3) Bastien, G., Barkley, A., Chappus, J., Heath, V., Popov, S., Smith, R., Tran, T., Currier, S., Fernandez, D. C., Okpara, P., Owen, V., Franks, B., Hueter, R., Madi19gan, D. J., Fischer, C., McBride, B., & Hussey, N. E. (2020). Inconspicuous, recovering, or northward shift: Status and management of the white shark (Carcharodon carcharias) in Atlantic Canada. Canadian Journal of Fisheries and Aquatic Sciences, 77(10), 1666–1677.
(4) Betts, M. W., Blair, S. E., & Black, D. W. (2012). Perspectivism, Mortuary Symbolism, and Human-Shark Relationships on the Maritime Peninsula. American Antiquity, 77(4), 621–645.
(5) Gallant, J. H. (2026b). Understanding shark interactions in Canada. St. Lawrence Shark Observatory.
(6) Fisheries and Oceans Canada. (2025). Recovery strategy for the white shark (Carcharodon carcharias) in Atlantic Canadian waters. Species at Risk Act Recovery Strategy Series.