The shots of the whale and ROV together (that I guess are from a camera attached to the tether) are hauntingly beautiful. Here's a couple fun fact about sperm

The shots of the whale and ROV together (that I guess are from a camera attached to the tether) are hauntingly beautiful. Here's a couple fun fact about sperm whales: They have the largest brain among all animals living and extinct (17lbs!). Scientists can estimate the size of sperm whales based on analysis of the clicks they generate for echolocation. [1] http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1991.tb04807.x/abstract;jsessionid=36C2A47EFF5709CDF643E230296EDB72.f03t01 http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1991....