| N | BACK TO MAIN INDEX PAGE |
| - nannoplankton |
| Phylum Urochordata : |
| - nanoplankters |
| Continental shelves : |
| - nautilus |
| Phylum Mollusca : |
| - needlefish |
| Fishes - Taxonomic overview : Fish body forms : |
| - needlefishes |
| Fishes - Taxonomic overview : |
| - nemertea |
| Number species per Phylum : Phylum Nemertea : |
| - nemerteans |
| Phylum Nemertea : |
| - neotenic |
| Phylum Urochordata : |
| - noctiluca |
| Phylum Sarcomastigophora : |
| - norway |
| Class Cephalochordata : |
| - notocanthiformes |
| Fishes - Taxonomic overview : |
| - notochord |
| Phylum Chordata : Class Cephalochordata : Phylum Urochordata : |
| - nuda |
| Phylum Ctenophora : |
| - nudibranch |
| Phylum Mollusca : |
| - nudibranchia |
| Phylum Mollusca : |
| - nurse |
| Fishes - Taxonomic overview : |
| - nuttalina |
|
Phylum Mollusca :
|