Whatever the case, this special family has a long journey ahead. Twins are twice as hard on mother whales, as the babies can grow 50 pounds per day and, according to Anderson, the mothers can lose nearly one-third of their body weight while nursing just one calf. Mom will also have to keep them safe from orcas and human threats like ships and fishing gear.
But for now, the whales are going strong as they make the 6,000-mile migration from Mexico's coast to the arctic seas.
"They all appeared normal sized and appeared to be swimming normally like one big, happy, healthy family," Anderson said. "I hope to hear about more sightings of this beautiful trio as they make their way up the coast."
"I'll say a little prayer that they make it to the feeding grounds and Mom weans them properly," he added.