Lembeh is an island off the north east coast of Sulawesi near the city of Bitung, in Indonesia. The Lembeh strait is known for its colorful marine life, in particular sea slugs.
The Coconut Octopus is one of very few animals on the planet known to seek out and make use of objects as tools, in this case a shell used as protection - photo taken at Lembeh Strait, Indonesia