Animals

4. A subphylum of mostly aquatic animals including crabs, lobsters, crayfish, shrimp, and krill.
6. A cool-blooded, air-breathing vertebrate with special skin made up of scales, bony plates, or both.
8. A mammal that gives birth to undeveloped young, which normally thereby develop in a pouch.
12. A member of mollusc phylum characterised by bilateral body symmetry, a large head, and a set of arms or tentacles.
13. Aquatic animals with gills but lacking limbs with digits.
14. A basal animal with a body full of pores and channels to allow water to pass through it.
15. A type of fish with a cartilaginous skeleton and five to seven pairs of gills.

1. A large-brained terrestrial or arboreal mammal with highly evolved sight rather than smell.
2. A warm-blooded egg-laying animal with feathers, a strong lightweight skeleton, and toothless beaked jaws.
3. A large class of molluscs including snails and slugs.
5. An joint-legged arthropod with eight legs but neither antennae nor wings.
7. A segmented terrestrial invertebrate with a tube-like body.
9. A hexapod characterised by an exoskeleton, three-part body (head, thorax, and abdomen), six jointed legs, compound eyes, and antennae.
10. Any one of several marine invertebrates including starfish, brittle stars, sea urchins, and sea cumbers.
11. An animal that produces milk for its young.