This is a migrating epidermal cell showing vigorous lamellipodial ruffling more than 180 degrees around its circumferance. The cell becomes elongated into a canoe shape. The mechanical tension generated by the lamellipodia appears to stretch the cell into an elongated form. The lamellipodia in the anterior region of the cell are opposed by a lamellipodium in the trailing region of the cell. This may account for the persistance of the cells motion in a forward direction. All of the cells organelles-- lysozomes, mitochondria, endoplasmic reticulum--are localized with microtubules around the cell body at the trailing edge of the cell. Video made available by Mark Cooper thru Zebrafish - The Living Laboratory.