Luzon Island, Philippines
This banded sea krait or yellow-lipped krait (Laticauda colubrina) returned to the surface almost exactly every 15 minutes from a depth of about 35 feet, breaking the surface for only a split second to take a breath of air. On the bottom, it slowly crawled along, poking its head under coral crevices and under debris, foraging for small fish or perhaps eel prey.
Jeffrey N. Jeffords (photographer; copyright holder; identification)
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