WHOI/Joint Program student Wu-Jung Lee found that the sonar echo from a squid depends on where the sound waves hit the squid. Echoes of sonar pings that hit a squid broadside (left) are very consistent and differ a lot from echoes of sonar pings that hit at other angles, such as head-on (right).
These photos show the squid Sepioteuthis sepioidea, which may or may not be eaten by dolphins or toothed whales. (Photos by Roger Hanlon, Marine Biological Laboratory)[back]
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