Looking for a family-friendly activity? Visit The Marine Mammal Center's hospital and visitor center in Sausalito, California! Tickets are free but must be reserved online in advance. For important health and safety policies and to reserve your tickets, see MarineMammalCenter.org/visit.

Closeup of a Sea lion's face on a white infant onesie, where "Born to be Wild" and the TMMC logo is also visible.

Sea Lion Onesie

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For the wildest babies. Featuring California sea lion pup Notebook, a former Marine Mammal Center patient, and the message "Born to be wild," this unique, Marine Mammal Center-exclusive onesie is sure to put a smile on anyone's face!


  • 100% cotton.
  • 3 snap-button closures along bottom.
  • Infant sizes 6mo, 12mo, and 18mo.