Spy on your favorite Tiger, Hammerhead, and Bull sharks in our custom-designed Google Earth interactive map.


Tracking Shark-Tagging Grandmaman

Species: Tiger Shark
Scientific Name: Galeocerdo cuvier
Date Tagged: March 18, 2013
Location Tagged: Biscayne Bay
Gender: Female
Total Length (TL): 206cm

About Shark-Tagging Grandmaman

The Story Behind the Name: Shark-Tagging Grandmaman is the adoptive shark of Mary and Gino Calleti. Here is their story:

On March 18, 2013 my husband and I, along with 6 other Toyota dealers and their wives were in Ft. Lauderdale and enjoyed being part of the Shark Research & Conservation Program for shark research. We went out with marine biologist, Neil and his team from U of Miami. Where some days they might catch one or even see no sharks at all, Neil and his team were very pleased that there were 9 sharks caught and tagged on that day. We were encouraged to actively participate in the process of tagging the sharks. Our last catch was a tiger shark, which Neil was thrilled about since they are rarely seen around Florida. Their numbers are dropping quite rapidly and this team is studying them and trying to save them. Our shark (a female), which we adopted and named “Shark-Tagging Grandmaman,” was outfitted with a satellite so we can follow her migration online. We look forward to sharing this memorable experience most especially with our grandchildren so that they may develop a greater awareness to protect our planet. Our sincere thanks go out to Neil and his team for a most informative learning experience.

Satellite Tagging: Shark-Tagging Grandmaman was carefully tagged with the latest in satellite tag technology providing us with the first opportunity to follow the long term movements of these threatened species. Please keep checking back frequently to follow Grandmaman’s movements, which will be updated every few days as her satellite tag continues to send us real-time tracking data.

Adopt-a-Shark: For information on how you can contribute to our shark conservation research by adopting and tracking your own shark, please visit our Adopt a Shark page.

System Requirements

Google Maps renders in all modern browsers and mobile operating systems. For more details visit Google’s map support page to view detailed system requirements.


To animate our interactive shark tracking, play with the time slider tool in the map upper-left. Simply, go to the slider & separate the bottom left & right tabs by ~1/4”. Then click on the leading tab & drag it across the slider; or click play to automatically view tracks.