We have done the night dive at Hol Chan and saw no less than 4 Octopi (sp). The black and orange ones. Just beautiful, but can you actually see them snorkling? We were at about 20-25 ft and seems they would be hard to see at that depth even with a really strong light. Wouldn't want to snorkel to close to the surface areas of the reef.

They are diffinitely night creatures.

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