| LARVA | Active immature form of a creature that undergoes metamorphosis, e.g. a tadpole or caterpillar (5) |
| EFT | Small creature that undergoes metamorphosis |
| NOCTURNAL | (Of a creature that is) active at night (9) |
| IMAGO | Final stage or form of an insect that undergoes metamorphosis, typically winged (5) |
| FROG | Amphibian that undergoes metamorphosis from tadpole to adult in around 24 hours (4) |
| NIPPER | A carter, a costermonger or a navvy's boy assistant; a chela of a crab or a lobster; a child; a cutpurse or a pickpocket; a creature that bites or pinches; or, one of a pair of cuffs (6) |
| NYMPH | Immature form of a dragonfly |
| ORGAN | Vitally functioning part of a creature (and a large musical instrument!) (5) |
| ANIMA | Soul of a creature without a tail (5) |
| ELVEN | Characteristic of a creature with pointed ears and magical powers (5) |
| COMMA | Creates a pause, while resembling a tadpole (5) |
| TADPOLE | Name the immature form of a frog (7) |
| SPIRACLE | Word, from the Latin for "breath", for a cartilaginous fish's oxygen inlet, an insect's breathing pore, a tadpole's water inlet or a whale's blowhole, thus a geological vent for exhaling steam (8) |
| RING | A segment of a worm or caterpillar (4) |
| LIFECYCLE | Stages of an animal/organism, such as egg-chick-hen, or caterpillar chrysalis-butterfly (4,5) |
| SPIDER | By the sound of it, caught sight of a creature (6) |
| SAGITTARIUS | Sign of the zodiac represented by the archer - a creature that is half horse, half human (11) |
| ABLETOADAPT | Flexible relationship between a tadpole and a bat (4,2,5) |
| SEASNAIL | Small spiny-finned fish of cold seas having a tadpole-shaped body (3,5) |
| NOVA | A variable star that undergoes a cataclysmic eruption (4) |
