A few nice cliff diving images I found:
HOVERING IN THE UPDRAFT
Image by RayMorris1
Gannets have air sacs in their face and chest. These reduce the impact when gannets dive at high speed into the sea – they act like car air bags to cushion the blow.
Image by AtOMiCNebula
Why they have a guy diving head first into a giant telephone is beyond me.
Image by Terry Lawson
This photo was taken at Horseshoe Lake near Jasper, Alberta, Canada. Many times our family have hung out here on a warm summer day diving from the cliffs.