Lagoon Ecos: A Journey through Lakshadweep Atolls

Sreenath, K R and Anto, Alvin and Ratheesh Kumar, R and Raju, Aju K and Koya, Mohammed and Sobhana, K S (2025) Lagoon Ecos: A Journey through Lakshadweep Atolls. ICAR- Central Marine Fisheries Research Institute, Kochi. ISBN 978-93-82263-80-7

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Abstract

For millennia, we have measured human achievement by its architecture: the stone walls of ancient cities, the intricate defensive structures, and the monumental edifices that underpin our societies. But look beneath the waves, and you find a civilization built without human hands, a complex, defensive society defined by its intricate, living structure: the coral reef. This is the lens through which we must view the Lakshadweep archipelago. Scattered across the vast, deep blue of the Lakshadweep Sea, these islands are not continental fragments, but the exposed rooftops of massive, underwater metropolises. Each atoll is a perfect, ancient city, constructed entirely from the skeletal remains of billions of coral polyps, the ultimate biological engineers. At the very heart of this coral civilization lies the Lagoon. This central body of protected, shallow water is the communal square, the agricultural ground, and the teeming central entral district. It is the perfect embodiment of the term Ecoss-the - the Greek root meaning "house," "dwelling," or "home." The geographic isolation of Lakshadweep, hundreds of kilometers from the nearest mainland shore, has ensured the unique character of this Lagoon Ecos. The deep ocean currents act as a constant cleansing stream, maintaining a purity that allows this complex societyyto thrive. We invite you to join us on the perimeter of this remarkable community, a world where every wall, every pillar, and every crevice is a testament to cooperation and survival. The true marvel of the Lagoon Ecos is the Bloom, the sheer, audacious volume of life it supports. The soft, sunlit environment nurtures a bewildering array of species: iridescent schools of damsels; secretive moray eels peering from ancient coral heads; and the massive, yet tranquil, sea cucumbers grazing silently across the seafloor. This productivity is the ultimate testimony to the success of the atoll system. We have captured the rules of this Ecos in action. Our lens has tracked the essential rituals of the reef: the cooperative cleaning stations where larger fish queue for tiny cleaners; the camouflaged scorpionfish ready to ambush and the intricate, working reciprocity that sustains the Ecos. From the mesmerizing ballet of the megafauna patrolling the outer edge, to the careful construction of sand castles by the shrimp-and-goby teams, every photograph tells a story of adaptation, survival, and symbiosis. But our documentation is also a reflection on fragility. Coral ecosystems, though ancient, are intensely sensitive. The concept of the Ecos, the home, implies vulnerability. When the external environment shifts, the inhabitants of the house feel the change immediately. Global threats like ocean acidification and rising sea temperatures impose an immense stress on the delicate coral polyps, the very foundation upon which these islands are built. Through these images, we hope to establish a visual connection between the reader and the life sustained within this blue dwelling. May this book serve not just as a visual catalogue of beauty, but as an intimate record of a unique and precious habitat. For within the clear, calm waters of the Lakshadweep Lagoons lies an ecosystem,a magnificent Ecos - that deserves our careful and constant watch.

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