Lakshadweep’s 1,800-year-old giant “potato patch” coral may be among the world’s largest living colonies

The recent identification of the Lakshadweep Potato Patch Coral located at Kadmat Island has brought international recognition to the marine biodiversity of India, with a focus on coral reefs. Belonging to the species known as Pavona clavus, the living coral formation encompasses about 4,250 square metres, which makes it among the largest coral colonies found around the world. The age of the huge coral formation has been estimated to range from 700 to 1,800 years old; however, additional scientific testing is required. Overall, the discovery sheds light on aspects of coral life, including the significance of Lakshadweep coral reefs, coral adaptability and survival, marine conservation, adaptation to climate change, biodiversity preservation, and coral reef studies.A recent survey conducted close to Kadmat Island, Lakshadweep, has found what can be termed as one of the most unique formations of corals lying in the Indian Ocean. This unique coral, called the "Potato Patch", is a species of coral called Pavona clavus and covers an area estimated to be about 4,250 sq meters, which amounts to almost half the size of an international football ground. According to the findings of the United Nations Development Programme (UNDP), the area covered by the coral is measured to be about 85 metres long, 50 metres wide, and 20 meters deep. Commenting on the discovery, scientists said that the discovery of the Potato Patch Coral (Pavona clavus) of Lakshadweep islands, measuring up to an approximate 4,250 sq metre area, is indeed a unique scientific discovery.Coral reefs are known as the rainforests of the sea, as they possess tremendous biodiversity. The Lakshadweep archipelago of India, which is an atoll, is home to a huge variety of fish, marine animals, and other marine creatures.The scientists discovered that some per cent of the Potato Patch coral tissues were still alive, which suggests its relative healthiness even after years of environmental stress. The coral reef itself supports the survival of different kinds of marine creatures, making it a very essential part of the ecosystem of the Lakshadweep corals.The importance of such an event lies in the fact that large colonies of corals contain biological information over centuries. This includes information about marine conditions and environmental information. Previous studies conducted on Lakshadweep corals have revealed this fact already.The other striking feature of the Potato Patch coral is its ability to withstand various climatic shocks. Estimates show that the colony must have lived through several episodes of marine heat waves, tropical cyclones, and bleaching events.It acts as an oceanographic archive by providing a window into past oceanic changes as well as a benchmark model for predicting future conditions.Resilience is even more critical in times like now, where coral reefs across the globe are struggling due to warming seas. Corals living on the Lakshadweep atolls have been facing several health issues due to the adverse impacts of climate change.The discovery of the Potato Patch highlights the need to preserve coral reefs throughout the Indian Ocean. The coral reefs protect the shorelines from erosion, form the basis of fisheries and tourism and take part in carbon cycling processes.It is believed that research on the giant coral patch can enhance knowledge regarding coral life expectancy, resilience and possible ways to cope with climate change. Regular observations will allow researchers to determine why some corals remain more resistant to negative impacts compared to others.In light of the continuous threats to coral reefs due to climate change, the discovery of the Potato Patch in Lakshadweep offers some hope. It indicates that the resilience of some reef systems exceeds expectations.Not only does the newly identified Potato Patch coral qualify as a fascinating formation, but it also represents a living record of past environments, a biodiversity hot spot, and an indicator of the robustness of the marine ecosystem. Regardless of whether it is found to be one of the biggest living coral formations in the world in the course of further studies, its scientific and ecological importance is clear without a doubt.Lakshadweep will be able to take pride in the new discovery and reaffirm its importance in terms of marine biodiversity in India.