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Ethos

At Costanoa, we believe the ocean teaches us to move with intention, embrace discomfort, and reconnect with what truly matters.

Our mission is to offer world-class freediving courses, spearfishing workshops, expeditions, and ocean-driven products that empower individuals to explore deeper, live consciously, and connect responsibly with the ocean.

CindY AT SEA

Costanoa was founded by Cindy Yang—freediving coach, spearfisher, photographer, and the force behind Cindy at Sea.

Cindy’s relationship with the water runs deep. From growing up exploring the kelp forests of California to diving and photographing remote oceans around the world, she’s built her life around the coast. With a background in conservation biology and a decade as a California firefighter and a paramedic, she brings a rare mix of resilience, technical and risk mitigation skills, and deep respect for the natural world to every course, trip, and session she offers.

Through Cindy at Sea, she extends her work beyond coaching—using underwater photography and storytelling to capture the raw beauty of marine life, and to share the coastal lifestyle she’s shaped her life around.

Together, Costanoa and Cindy at Sea are about more than just training or images. They reflect a lifestyle—a way of moving through the world that’s grounded, skillful, and connected to something bigger.

Follow Cindy's Journey
  1. Costanoa acknowledges the Traditional Custodians of the lands and waters we operate on, in Australia and beyond. We honor Indigenous cultures' deep connection to the ocean, land, and sky, respecting their knowledge, traditions, and stewardship. We pay our respects to Elders past, present, and emerging.