Dorsal cell movements during zebrafish gastrulation includes a combination of epiboly, involution, and convergence and extension along the embryonic axis. Note that videos CIL 11818, 11819, and 11820 are all of the same sequence. 11819 is the raw data, 11818 can be viewed in 3D when wearing red/blue glasses and 11820 has some cells marked with colored dots for tracking the movement and timing of cell involution and convergence.. Cells closer to the margin involute first and end up in more anterior locations in the hypoblast, while cell involuting later move to more posterior locations along the anterior-posterior axis. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.