| COTTONMOUTH | Snake also known as a water moccasin |
| CREEP | Move like a water moccasin |
| ANACONDA | Large snake also known as a water boa (8) |
| COPPERHEAD | Snake also known as highland moccasin |
| ADDER | Type of snake, also known as a viper (5) |
| TERCIOPELO | Deadly snake also known as a fer-de-lance |
| ASP | Venomous snake also known as the Egyptian cobra |
| KINGCOBRA | Venomous snake also known as the hamadryad (4,5) |
| ADDERS | Snakes also known as common European vipers (6) |
| ASPS | Snakes also known as vipers or adders (4) |
| OPHIDIAN | Any reptile of the clade comprising the snakes, also known as Pan-Serpentes (8) |
| TARDIGRADE | Highly resilient invertebrate also known as a water bear |
| CLEPSYDRA | Ancient timekeeping device commonly known as a water clock; from Greek, 'steal water' (9) |
| FILTER | Device such as a water purifier in an aquarium or swimming pool; or, a porous cone in a coffee machine (6) |
| TANK | Originally described as a "water carrier" for security reasons, what was it known as from 1916? (4) |
| RATTY | Kenneth Grahame's charming and affable connoisseur of picnics, river life and "simply messing about in boats" - a friend of Mole, this cheerful fellow's name is a misnomer for his species as a water v |
| SIEVE | As a water container, it's a poor choice |
| SNAKES | Reptiles such as asps, adders, boas, coachwhips, diamondbacks, vipers or water moccasins (6) |
| POODLE | From the German for "puddle hound" or "splash in water", an often highly pampered pooch, originally bred as a water dog for hunting (6) |
| CLEAR | Make it past, as a water hazard |
