Poseidon with the Blush Mermaid on it's back.

Blush Mermaid (赤面の人魚, Sekimen no Ningyo) is one of the valuable items of Jirokichi Suzuki is a red diamond that is placed on the turtle's shell named "Poseidon". According to Jirokichi's story, a actress who have died on sea a half year ago had Poseidon as a pet which she is the original owner of the Blush Mermaid. The reason why Poseidon has the jewels around his body is because the actress stick them together with glue before the ship sunk out of desperately which in hope that some day Poseidon would be saved and been taken in by somebody. Known is that the jewels were both of breeding expenses and a sign of gratitude.