The Baby Bears build a submarine and explore the depths of an aquarium so they can bring a lost squid to its family.
The three bears while trying once again to find a place to stay get caught along with a school of fish and discover a little squid clinging to them; the squid tries to get the bears to take it to an aquarium.
- Baby Panda is once again voiced by Duncan Joiner. It appears that he and Max Mitchell are taking turns as Baby Panda's voice.
- The Merlion is featured in the episode, a reference to Daniel Chong's Singaporean heritage.
- This is the first episode that shows a "The End" title card.
- When the Baby Bears are covered in octopus ink, it actually matches Baby Panda's black fur and he thought his own fur wouldn't come off because he thinks he's still covered in octopus ink a little.
- When the Baby Bears are covered in octopus ink and trying to take the little squid home, the statue of Merlin makes a cameo appearance.
- January 7, 2019 (United Kingdom and Ireland)