Sediments in the Palk Strait, between India and Sri Lanka10.3N 79.8E
Tan sediments between southern India (above) and Sri Lanka (below) give a greenish hue to the waters of the Palk Strait.
The sediments are densest off Point Calimere, also called Cape Calimere and Kodikkarai (top center), a low headland on the Coromandel Coast, in the Nagapattinam district of the state of Tamil Nadu, India.
It is the apex of the Cauvery River delta, from which the sediments are flowing, and marks a nearly right-angle turn in the coastline.
The land around Point Calimere is green from the Vedaranyam forests covering the cape, one of the last remnants of the dry evergreen forests that were once typical of the East Deccan dry evergreen forest ecoregion.
The Point Calimere Wildlife Sanctuary, with an area of 24.17 km², includes the cape and its three natural habitat types: dry evergreen forests, mangrove forests, and wetlands.
However, pesticide residues running off from agricultural fields and shrimp farms has entered the ecosystem, harming animals and the water quality.