They’re microscopic, mysterious, and mighty. In this episode of Saltwater Stories, we dive deep into the hidden world of phytoplankton, the tiny ocean drifters that generate half the oxygen we breathe, fuel marine food webs, and shape our planet’s climate. From glass-shelled diatoms and glowing dinoflagellates to ancient cyanobacteria and chalk-armored coccolithophores, discover how these invisible powerhouses build ecosystems, combat climate change, and even inspire biofuel and pharmaceutical innovations. But all is not calm beneath the waves. Harmful algal blooms and shifting ocean conditions threaten this delicate balance. Join us as we uncover the wonder, complexity, and critical importance of the ocean’s tiniest giants.

Beneath the waves lies a world so vast, dark, and extreme that humans cannot reach it alone. In this episode of Saltwater Stories, we explore the cutting-edge machines that are changing how we study the ocean. Meet AUVs and ROVs, autonomous and remotely operated vehicles built to dive where divers cannot. These robots are mapping shipwrecks, studying melting ice shelves, detecting underwater plumes, and even preparing for missions beyond Earth. From delicate archaeology to high-stakes disaster response, they are helping scientists unlock the ocean’s most guarded secrets. Join us as we explore the tools, missions, and future of robotic ocean exploration.

They may look like crusty little bumps on rocks, but barnacles are anything but ordinary. In this episode, we dive beneath their stony exteriors to uncover a life of surprising complexity. From upside-down shrimp relatives that cement their heads to the seafloor, to parasitic body-snatchers that take over crabs, these tiny creatures defy expectations. You'll discover how barnacles ride whales across oceans, craft one of the strongest natural glues on Earth, and even inspire medical innovation. Join us as we explore the extraordinary world of the seemingly humble barnacle.

Tucked along the volcanic shores of the Galápagos lives a creature that defies expectations. It is a reptile that dives into the cold ocean, feeds underwater, and sneezes out salt like it’s no big deal. In this episode of Saltwater Stories, we follow the marine iguana, a species so strange it once puzzled Darwin and now fascinates scientists around the world. From its prehistoric look to its ability to shrink its skeleton during hard times, this lizard is a master of extremes. Join us as we uncover how it survives, what threatens its future, and why its story matters far beyond the islands it calls home.

Ever heard of a crab that climbs trees, sniffs out snacks from miles away, and packs a punch strong enough to crack coconuts? Meet the coconut crab... part ninja, part tank, and all attitude. In this episode of Saltwater Stories, we follow this oversized oddball from its baby days drifting at sea to its full-blown land-crab glory. Along the way, we discover what makes it so weird, so wonderful, and why it just might be the most extra crab on the planet.

Imagine being far out at sea on a moonless night when suddenly the ocean around you begins to glow. Not in flashes or sparks, but in a soft, steady light stretching from horizon to horizon. In this episode of Saltwater Stories, we explore the stunning reality behind the Milky Sea, a rare and massive natural phenomenon once thought to be sailor’s legend. Learn how trillions of tiny bacteria can light up an area the size of a country, why they might be doing it, and what these glowing waters reveal about the hidden rhythms of the ocean and the life it holds.

Beneath the ocean’s surface lies a world few have seen. Colossal mountains born of fire, sculpted by currents, and teeming with life. In this episode, we dive deep into the world of seamounts, underwater giants that serve as vital oases in the vastness of the sea. You will learn how they shape biodiversity, steer ocean currents, and hold clues to Earth’s history. At the same time, they face growing threats from human activity. Join us as we uncover both the wonder and the urgency of protecting these mysterious marvels.

They may resemble squishy vegetables and breathe through their backsides, but sea cucumbers are anything but ordinary. In this episode of Saltwater Stories, we explore the fascinating world of a creature with astonishing regenerative powers, remarkable chemical defenses, and a quiet but essential role in maintaining ocean health. From their shape-shifting abilities to their potential in medicine and reef conservation, sea cucumbers reveal just how complex and vital life beneath the surface can be. You may never see them the same way again.