The Tikkun HaYam Team

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Rabbi Ed Rosenthal


Born and raised in landlocked St. Louis, Ed’s passion for the marine environment can only be attributed to watching “The Undersea World of Jacques Cousteau” and reruns of “Sea Hunt” as a kid.  When he was 16 years old, he asked his parents if he could learn to Scuba Dive.  His mother’s response was: “If God meant for humans  to be under water, He would have given us gills.” So it wasn’t until a hiking trip in the Sinai during his first year of Rabbinical studies, that Ed had a chance to snorkel at Sharm el-Sheik.  There he heard the call of the Sirens.  When he returned to the US to continue his studies in Cincinnati, he finally got his scuba certification.  The Jewish tradition is filled with deep, spiritual teachings about water and the Sea, yet most Jews have not been exposed to this part of our heritage.  Ed wants to show the wonders of the underwater world through Jewish eyes, while raising awareness about the myriad threats it faces.  He believes that when Jews get involved in any issue, substantive change takes place.  Tikkun HaYam was created in order to get the Jewish Community involved to Repair the Sea.

Josh Keller

Program Coordinator

Josh Keller is a Master Scuba Diver Trainer, certified to teach over 25 different specialty courses. Josh grew up along the Jersey shore, always being in the water. Whether working, playing or learning, whatever he did was based on the ocean. He graduated from the Marine Academy of Science and Technology (a high school specializing in marine biology) as a Senior Chief Petty Officer in the NJROTC. He then attended Eckerd College after learning about the Scubi Jew program.  Excited to combine his passion for the ocean and Jewish heritage, Josh fell in love with Scubi Jew and was the student president for two and a half years.  Josh graduated from Eckerd College with a degree in marine biology and a minor in computer science.  After graduation,  Josh moved to Key Largo where he earned his PADI Master Scuba Diver Trainer certification.   He worked at Rainbow Reef Dive Center as an instructor, airboss, office staff, first mate, and guide. While in Key Largo, Josh taught many specialty classes about ocean conservation, and every dive for Josh is a Dive Against Debris. In 2020 Josh returned to St. Petersburg to be the Program Coordinator of Tikkun HaYam and Scubi Jew.

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Shayna Cohen

Outreach & Expansion Coordinator

Shayna Cohen is a PADI Master Scuba Diver Trainer, an SSI Century 100 Instructor, and #theseahugger.  Born in Hawai’i, growing up snorkeling and freediving, it is no surprise that Shayna is a marine conservation fanatic. She originally obtained her SCUBA certification to complete fisheries management research in Turks and Caicos.  With a Bachelor's Degree in Biology from Grinnell College, Shayna spent some time sneaking marine conservation into her lesson plans as an educator before deciding that teaching SCUBA is the best way to create marine stewards. Before joining Tikkun HaYam in 2018, Shayna worked as a SCUBA instructor, dive guide, and Conservation Co-Coordinator at Rainbow Reef Dive Center in Key Largo. Shayna has shared the wonders of the underwater world with hundreds of divers, pulled hundreds of pounds of debris from the water, and volunteered her time and skills with numerous environmental organizations.

Zac Oppenheim

Ally's Way Captain

Growing up on the Great Lakes, a passion for beach, boat, and water sports of all kinds has existed for all Zac's life. Zac earned both an undergraduate and a masters degree in Education. He is also a US Powerboating Instructor Trainer, a US Coast Guard licensed Master, and has worked at waterfront education facilities in higher education for over 18 years. Working with and contributing to the organization Zac is able to tie together his interests, career, and spirituality as we further our work of Tikkum HaYam.


For More on Ally's Way

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Rabbi Adam Gindea

Miami Base Rabbi & Program Coordinator

Adam is the Director "Base Miami," a new initiative through Hillel International that engages young professionals in Miami and Metro Dade County.   Born and raised in NYC, Adam received a BA in religion from Columbia University and a BA in Bible from the Jewish Theological Seminary.  Adam also received rabbinic ordination from Yeshivat Pirchei Shoshanim, studied safrut (scribal arts) under the tutelage of Rabbi David Gottesman, and holds a certificate in Jewish education from the Shalom Hartman Institute. Adam is a Master Scuba Diver and has been diving for many years including participating in underwater archaeological digs with the University of Haifa.  He loves meeting Jewish divers in Miami and has created a monthly Dive Against Debris program for Jewish Young Adults in Miami.