Whale Acoustics

...err..well, not exactly. But it is a much easier way for a 45 ton sperm whale to get a quick bite to eat. This amazing footage of sperm whales (Physeter macrocephalus) shaking cod fishing lines 108 m deep off the coast of Sitka, Alaska, is the first ever of sperm whales feeding - albeit not on its usual prey, the massive squids of the deep sea. Most of the time, sperm whales dive to a staggering 900 to 2600 feet (that's up to half a mile or so deep) to catch their meals. At such depths, with no light and such a wide expanse, filming feeding is nigh impossible. But we do know that eating…