Giant squid, the huge tentacled creatures that live in the dark ocean depths, were probably the inspiration for the legend the kraken and have remaind largely elusive for most of human history. The first images of a live giant squid were captured in 2004 and another became the first to swim into view on film in 2013. Even so, most specimens spotted have died, tangled in fishing nets. Last week, a giant squid made gentle mockery of decades of efforts to spot them when it swam into a harbor northwest of Tokyo.