Molas are opportunistic feeders, quickly developing a preference for fish, prawns, and squid when they are in captivity. Molas are well adapted to eat jellyfish. Their thick skin provides armor against jellies' stinging barbs. These floating clumps of seaweed are also gathering places for small fishes that nibble the molas' parasites. Juvenile molas are easy prey for killer whales, sharks, and sea lions.
Sea lions tear off the tender fins, leaving the fish for sea birds.
Molas are a delicacy in Asia. It became so large that the aquarium arranged for it to be lifted by helicopter to the ocean.