Whale.fm is a project (which you can contribute to!) to help "marine researchers understand what whales are saying." - really it's a project looking at the effects that manmade sound has on marine life, but what whales are communicating with their songs is still a really interesting question, so I've listed some relevant links in extended description. [more inside]
On April 18, a half-dozen orcas battled a pod of sperm whales off the southern coast of Sri Lanka. The unusual encounter is one of fewer than a dozen such recorded conflicts — and the first observed. “We saw the water churning on the horizon,” said Heinrichs, a photographer and filmmaker who was in the area looking for blue whales. He and his colleagues steered their boat toward the patch of white water. As they got closer, they saw an enormous dorsal fin slicing through the water — a killer whale trademark — and then noticed the group of sperm whales, clustered together in a defensive stance. At that point, Heinrichs did what many of us would not do: He jumped in.
Researchers sneak up on sleeping sperm whales (.mpg video, hosted by Current Biology.) Matt Kaplan, writing in Nature, summarizes a 2008 article in Current Biology: "An accidental encounter with a pod of sleeping sperm whales has opened researchers’ eyes to some unknown sleep behaviours of these giant sea creatures . . . A team led by Luke Rendell at the University of St Andrew’s, UK, were monitoring calls and behaviour in sperm whales (Physeter macrocephalus) off the northern Chile coast when they accidentally drifted into the middle of a pod of whales hanging vertically in the water, their noses poking out of the surface. At least two of the whales were facing the boat, but not a single animal responded." [more inside]