I have tried to get a C-card of open water course for diving of PADI since last week. Then, finally, I finished the lectures of it today. Last diving today, I luckily could watch Black Mantas. It looked like swimming slowly and flatly.
Though I cannot do neutral flout well, I could open the gate of a new world for me where is under the sea. I would like polish my skill of it and, control my body in salt water with my order. That is my next goal for a fun diving.