Marilou Seiff, 64, California
A 3 time Crossfit Games participant, Marilou is one of the fittest women in the
world. Marilou is a marine biologist where, as the CEO of the Marine Science
Institute, she teaches children to respect and steward the marine environment.
world. Marilou is a marine biologist where, as the CEO of the Marine Science
Institute, she teaches children to respect and steward the marine environment.