Did you know that hermit crabs play a kind of musical chairs on the beach, swapping the shells on their backs? Or that an oyster cleans up about 200 litres of water a day? With his naturalist’s mind, photographer’s eye and stunning photos, Yuvan Aves zooms onto the sands or pans out to the ocean to give us little details as well as the larger picture of India’s coastline. Walking with Kadalamma and her fisherman grandfather, the seashore becomes a dynamic space, teeming with life. Fascinating snippets underline how beaches maintain a crucial land-sea balance. Quick alerts point to dangers of climate change and why we need to care for our coast.