How many offspring do sea otters have?

Sea Otters usually have one pup at a time. Sometimes, there are twins, but more often a single pup is born to the mother. During her lifetime, a female may have many pups.
A sea otter typically bears only one pup at a time. Sometimes a sea otter will have twins; however, one of the pups will be abandoned, for a sea-otter mother can care for only one pup at a time.