In the video, a person's hand is seen touching a black slug that is crawling on a tree bark. The slug is shiny and has a smooth texture. The tree bark is brown and rough, with some dry leaves scattered around. The person's hand is pale and appears to be gently touching the slug. The slug is moving slowly and seems to be exploring its surroundings. The video is shot in natural light, and the focus is on the interaction between the person's hand and the slug.