The Uppermoons were sitting in chairs talking to each other...and hearing the waves crashing and seagulls

Kokushibo sitting in the chair staring at the water

Daki sunbathing

Gyutaro eating snacks

Doma was in the water with Gyokko

Hantengu was hiding behind the beach chair staying out of the sun

Gyokko: AHH!

Doma: You okay!?

Gyokko: Seaweed touched me and scared the s*** out of me!