Tumble Leaf
"The Glow Below" / "Sub In A Bottle"
S2 E9:
THE GLOW BELOW Fig takes his camera on an undersea adventure in Maple’s submarine to find the source of a mysterious glimmering glow. SUB IN A BOTTLE Fig and Maple receive a gift from a lonely, camouflaging cuttlefish - but when they go underwater to look for the gift sender, they have trouble finding him!"