A significant marine event was recorded off the coast of Florida when a 10-foot great white shark was detected swimming near former President Donald Trump's exclusive Mar-a-Lago resort. The shark, named Cayo, transmitted a tracking signal known as a 'Z-ping' in the waters adjacent to the Palm Beach estate during the early morning hours of April 13th.
Tracking the Predator's Journey
Cayo is a substantial female shark, measuring 10 feet and three inches in length and weighing 689 pounds. Marine researchers from the nonprofit organization OCEARCH have been monitoring her movements for less than a year, following her initial tagging and release in Mahone Bay, Nova Scotia, on July 29, 2025. Since that release, this formidable predator has traversed an impressive distance of more than 4,100 miles along the Eastern seaboard of North America.
Understanding the Z-Ping Signal
The detection near Mar-a-Lago occurred through what scientists term a 'Z-ping' – a signal transmitted when a tracked shark briefly surfaces. According to OCEARCH, this type of signal is received by Argos satellites but lacks the strength to provide precise geographical coordinates. The organization emphasized that Cayo's presence offshore posed no additional risk to public safety, as juvenile and subadult sharks like her typically avoid shorelines and are seldom observed by beachgoers.
Seasonal Migration Patterns
This detection marked the second ping from Cayo in the Palm Beach area within just a few days, with another signal recorded the previous Friday morning. Scientists explain that this movement represents normal migratory behavior for great white sharks, who follow predictable seasonal patterns along the coast.
During winter and spring months, southern waters become warmer and offer more abundant prey, making Florida's coastal regions attractive to these marine predators. As reported by CBS12, sharks like Cayo will typically migrate northward during summer and fall months, following temperature and food source fluctuations.
Presidential Visits and Research Impact
The shark's detection near Mar-a-Lago highlights an interesting intersection between marine research and presidential security protocols. During Trump's first term, concerns emerged about how presidential visits to the estate might affect shark population studies. Biologist Stephen M. Kajiura explained to Jacksonville.com that Mar-a-Lago's location places it directly along survey paths used by researchers tracking shark populations in North America.
Kajiura, who conducts aerial surveys using low-flying planes along Florida's coast, noted that presidential visits trigger temporary airspace closures that directly impact data collection efforts. 'He has no idea that he’s doing it, but it does mean a significant reduction,' Kajiura stated regarding the effect of these security measures on research continuity.
Trump's Documented Views on Sharks
The detection gains additional context given Trump's publicly expressed views about sharks. The former president has demonstrated a consistent distaste for these marine predators dating back to at least 2013, when he made multiple social media posts ridiculing them.
On one occasion, Trump wrote: 'Sorry folks, I’m just not a fan of sharks - and don’t worry, they will be around long after we are gone.' In another post, he added: 'Sharks are last on my list - other than perhaps the losers and haters of the World!'
This perspective was further highlighted during a 2020 rally, where Trump told attendees he was 'not a big fan of sharks' and recounted declining invitations to contribute to shark conservation funds, stating he preferred to support other causes.
Marine Life in the Region
Shark sightings are not uncommon in the waters around Palm Beach, particularly during spring and summer months when marine activity increases. The area's coastal ecosystem supports various shark species as part of their natural migratory routes. Researchers continue to monitor Cayo and other tagged sharks to better understand their movement patterns and habitat preferences along the Eastern seaboard.
