There's cute. And then there's itty-bitty baby sea otter cute.

A newborn baby sea otter became a resident of the Vancouver Aquarium Marine Mammal Rescue Centre after some people found the little pup swimming by itself in open water off northern Vancouver Island in late June. Estimated to be only a few weeks old at the time, the sea otter seemed healthy, but still required round-the-clock care, just like he would have gotten from his mother.

baby sea otter sleeping at Vancouver Aquarium When the baby otter was first found, he was swimming alone in open water. (Photo: Vancouver Aquarium)

Staff and volunteers took turns feeding, bathing and grooming the fluffy pup.

Now, about a month after his rescue, he's estimated to be between 6-8 weeks old, weighing almost 9 pounds. He still needs 24-hour care, but is getting a little more independent.

sleeping baby sea otter at Vancouver Aquarium There isn't much cuter than a sleeping baby sea otter. (Photo: Vancouver Aquarium/Facebook)

The center recently posted an update:

"He is still nursing from the bottle, eating 25 percent of his body weight per day in a special otter pup formula made by our animal care team. Just this week in addition to the bottle he started eating solid food; 5 grams of clams per feed. He loves his clams!"

baby sea otter swimming at Vancouver Aquarium The little guy is transfixed by a bubble. (Photo: Vancouver Aquarium)

The pup is now very energetic and curious. He's grooming himself and has become a great little swimmer. He loves diving to the bottom of his swim tub to retrieve his toys. One of his favorites is a colorful toy hair dryer.

baby sea otter at Vancouver Aquarium sleeping with toy hair dryer Every baby sea otter should have a toy hair dryer. (Photo: Vancouver Aquarium)

The center recently held a contest to choose a name for the popular, fuzzy resident. He was named Hardy for the port where he was first taken for treatment after he was rescued.

You can learn more about the little guy's story in this video:

And just because you can't get enough cute baby otter photos, here's one more to make you smile.

sleeping baby sea otter at Vancouver Aquarium What's cuter: his little nose or the pads of his feet? (Photo: Vancouver Aquarium)

Mary Jo DiLonardo writes about everything from health to parenting — and anything that helps explain why her dog does what he does.