Cephalopoda in the Marshalls includes species of octopus, squid and cuttlefish. Octopus in particular can be difficult to identify, so many of the names we use are tentative, several based on similarities to photos in Humann & DeLoach (2010). Reef dwelling squid and cuttlefish are known from only a few species. Although we have seen no living Nautilus specimens and they are not known to occur this far east in the Pacific, there is some evidence that they may live in deep water well down the seaward slopes of Marshall Islands atolls.
Measurements were not taken in the field, so sizes given are very rough eyeball estimates often based on distant memories, and are provided only as a general guideline of what to look for. The thumbnails below link to pages with additional, larger photographs.
Humann, Paul & Ned DeLoach. 2010. Reef Creature Identification Tropical Pacific. New World Publications, Inc. Jacksonville.
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