Possible Clues:

• Line of children, one appearing to be in tears?
• Line of schoolchildren walking in pairs
• Reptile coiled oddly around most of boulder
• Big reptile
• Nile-dweller's pupils in formation?
• Alligator's larger relative
• Recoil at sea catching fish, snapper?
• Word that can come before skin, tears and clip
• Reptile picked up monster fish that is squeezing tail in channel
• Cold part in which fish is taken by one reptile