MIT Sea Grant Documents Longfin Squid Spawning Behavior Off Cape Cod
MIT Sea Grant, in collaboration with underwater photographer Keith Ellenbogen, has documented the intricate spawning behaviors of longfin inshore squid (Doryteuthis pealeii) off the coast of Cape Cod, Massachusetts. This effort provides a rare glimpse into the 'secret love life' of these cephalopods, which are a significant part of the region's commercial fisheries. Ellenbogen, after months of searching, captured images of large aggregations of squid engaged in courtship, competition, and egg-laying. The documentation reveals complex visual and chemical signaling, including rapid color changes and specific body postures, used by squid during spawning. Consort males, typically larger, guard females, while smaller 'sneaker males' attempt to fertilize eggs through stealth. Females deposit thousands of eggs in gelatinous capsules attached to the seafloor, often from multiple males. 
