You sea cucumber body flexible. An animal without a backbone with round shape long. Both ends are open channel of mouth and anus.Similar to a short beard were in charge help breathing and movement
..Sea cucumber in the upper end mouth of the tentacles resemble trees surrounded served in finding food. It is food, organic ground based mud and sand.And the remaining residue is taking out the channel bottom, which is on the other side. Which for many people see the clip. It may feel disgusted very much.