CM - Shipstuck (Patreon)

Commission for :icongoshujin-neko: of their ocs, Namu, Suishu, Hikoori and Himiko, involved in a deep sea quest:
The hero's party have been given a quest to salvage the remains from a prized sunken ship and were given a gift of being mermaids in order to do the quest without the risk of drowning. They soon find the ship and look for a way inside, finding the doorway unlocked and able to open up. Hikoori and Namu are able to swim inside, but Himiko manages to wedge her hips and rear into the doorway. Hikoori and Namu try to pull their friend free on her arms, but Suishu has other plans and lays her upper half against her rear, enjoying the size and softness of it as she hugs against it. Despite their attempts to budge her, not just can the doorway not be seen past Himiko's bottom, but it even partially covers the windows on both sides of the wall.