The variety show revealed that Cha Eun Woo will be filming with the permanent members on the 21st. While it's not confirmed that he'll be joining the team permanently, the show said that possibilities of him joining the team are open.

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'Boat Horn Clenched Fists' is the next series in the 'Clenched Fists' series. The variety show is based on the illustrated marine biology book created by�Jung Yak Jeon�two hundred years ago. �Using that as a reference, the participants of the show will study how much the ocean environment has changed and record new fish species.�

Kim Byung Man,�BTOB's�Sungjae,�Kim Jong Min,�Kang Ye Won,�Yook Joong Wan, and�Lee Sang Min are permanent members of the show.