What about the giant squid, you may ask? “Wimpy,” says Cassell. The giant—which grows to 60-plus feet and is one of only four squid, out of the 400 or so species found in the oceans, that are human-size or bigger—is generally considered to be fairly placid. In any case, it’s so elusive, no modern squid hunter has ever even seen one alive. No, if you want a scary squid, you want a Humboldt.