Orca enthusiasts rejoiced when a newborn calf was spotted 7 weeks ago.
But as of Tuesday morning, the endangered killer whale calf has not been seen.
L120 was the first calf born in the past 2 years. The calf's mother was spotted three times since Friday. Her baby was nowhere to be seen.
Orca experts believe the calf is dead, though no carcass has been found and it's unclear how it died.