The Seabottom Dwellers, known (roughly) as the "Seabed People" (海底人) in Japan, is a group of people that appear in Episode 3 of Touch Detective 2 ½. They live in a mountain that used to be submersed in the past and are friends of the Fossil Hunter. The Seabottom Dwellers swim around in the Cambrian stratum. Swimming has become their main source of recreation. It took time to the Seabottom Dwellers adapt to rock swimming as the molecular density of rock is very different from water. They consume fossils gleaned from the Cambrian stratum. Fossils from that particular era are a delicacy for them. Ordinarily, they limit their diet to those fossils, but they can eat any fossils if they need to. Their appearance is similar to the Aliens.