Are you surprised your island boyfriend is kinda like a mermaid too? I'll show you, then!

[Gon inhales a huge gulp of air, so much so that his cheeks are distended when he closes his mouth. Then he dives in the water, following behind Killua.

The environment of the tank is beautiful. It's lined by rocks and plants of all shapes and sizes and there are fish hiding among the decorations. Gon would comment, but his mouth is occupied.