Is there something cuttlefishy about a bigfin reef squid? Or are they just squidding around? 🦑🤔
With long fins that extend around their bodies, these sensational cephalopods sure seem more cuttlefish than squid—but it’s what’s on the inside that really matters! Both cuttlefish and squid have remnants of their ancient external molluscan shells, but whereas cuttlefish have broad, porous cuttlebones inside their mantles, squids like these have flexible, feather-shaped pens.