A marine mammal served as inspiration.

Zooey Deschanel has stayed mum since giving birth to her baby girl in August, but on Monday night, the New Girl star finally spilled on her firstborn's name.

While walking the red carpet for the New York premiere of Rock the Kasbah, Deschanel told People, "It's Elsie." Her husband, Jacob Pechenik, who accompanied the actress for the evening, chimed in with the other part of her name, "Otter." Yep, Elsie Otter.

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Deschanel said the name is "like the animal," with Pechenik clarifying, "Sea otters!"

On Tuesday morning, the actress appeared on Today and explained, "We just really liked the name Elsie and then we both love otters — they're very sweet and they're also smart. They use tools … they hold hands while they sleep, there’s so many amazing things about otters. They're wonderful animals." Too bad Pechenik wasn't around to finish more of her sentences.