HST i-band images of eight galaxies in the COSMOS field with different morphological properties. We have: (top line) two round-nucleated galaxies at different redshifts and two cometary-tadpole systems; (bottom line) two interacting-merging galaxies (a faint close galaxy pair and a brighter loose couple), a clumpy-chain system and finally an example of low-surface-brightness dwarf. The stamps are 2 × 2 arcsec wide and the green lines represent the contours of the galaxies.