Jorge Urban, a biology professor at the Baja California Sur University, said the 22 vaquitas were heard over a network of acoustic monitors. “If we stop operations, the vaquita will go extinct,” said Sea Shepherd first mate Jack Hutton. “We know we are risking our lives, but if we don’t the vaquita has no chance.” The activists are not alone. Ladkani directed “Sea of Shadows,” which won the audience award at the Sundance film festival this year for world documentaries. The fishermen go out each night and lay nets because many of them can’t stop; they’re too in debt to the traders.