Closeup of suckers and teeth rings on the tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Buccal cavity (mouth) and tentacles of Humboldt (Jumbo) squid (Dosidicus gigas), Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) swimming at night, Gulf of California, Baja California, Mexico, North America

Humboldt (Jumbo) squid (Dosidicus gigas) underwater, Gulf of California, Baja California, Mexico, North America

A Mexican fisherman holds up a Jumbo Squid (Dosidicus gigas - also called the Humbolt squid) hand caught at night off the Baja Peninsula, in Santa Rosalia, Baja, Mexico

Close-up details (note skin chromatophores and suckers on arm) from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

Close-up skin details showing chromatophores from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Jumbo Squid (Dosidicus gigas) eye and head detail. Mexican panga fishery in Santa Rosalia, Baja, Mexico

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

Humbolt Squid, Dosidicus gigas, in shallow tidepool, Punta Sargento, Sonora, Mexico

Close-up details showing beak from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Close-up eye detail from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Close-up eye detail from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

Humbolt Squid, Dosidicus gigas, stranded in shallow tidepool, Punta Sargento, Sonora, Mexico

Close-up details showing beak from a dissection of a Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez), Mexico.

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

A Mexican fisherman holds up a Jumbo Squid (Dosidicus gigas - also called the Humbolt squid) hand caught at night off the Baja Peninsula, in Santa Rosalia, Baja, Mexico

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico

Night fishery for Humbolt Squid (Dosidicus gigas) in the Gulf of California (Sea of Cortez) waters just outside Santa Rosalia, Baja California Sur, Mexico