Figure 2 : Time-lapse series of a burrowing polyp.

From: Burrowing hard corals occurring on the sea floor since 80 million years ago

Figure 2

(A) initial placement of the coral on a sand substrate (0 min). (B) elapsed time 30 min. (C) elapsed time 90 min. (D) elapsed time 210 min. (E) elapsed time 330 min. (F) elapsed time 450 min. (G) elapsed time 570 min. (H) elapsed time 690 min. (I) elapsed time 810 min.