| [24542] Bornetia | Appellations de Taxon | 24542 |
| [24543] Branchiostoma | Appellations de Taxon | 24543 |
| [24544] Brongniartella | Appellations de Taxon | 24544 |
| [24545] Bryopsis plumosa | Appellations de Taxon | 24545 |
| [24546] Calliblepharis | Appellations de Taxon | 24546 |
| [24547] Calliostoma zizyphinum | Appellations de Taxon | 24547 |
| [24548] Callithamnion | Appellations de Taxon | 24548 |
| [24549] Calmidae | Appellations de Taxon | 24549 |
| [2455] Hydroporus melanocephalus | Appellations de Taxon | 2455 |
| [24550] Camarodonta | Appellations de Taxon | 24550 |
| [24551] Cancilla | Appellations de Taxon | 24551 |
| [24552] Cancroidea | Appellations de Taxon | 24552 |
| [24553] Capitella capitata | Appellations de Taxon | 24553 |
| [24554] Capitella giardi | Appellations de Taxon | 24554 |
| [24556] Caryophylliidae | Appellations de Taxon | 24556 |
| [24557] Cataphellia brodricii | Appellations de Taxon | 24557 |
| [24558] Catenella | Appellations de Taxon | 24558 |
| [24559] Caulacanthus | Appellations de Taxon | 24559 |
| [2456] Hydroporus memnonius | Appellations de Taxon | 2456 |
| [24560] Caulleriella alata | Appellations de Taxon | 24560 |
| [24561] Caulleriella bioculata | Appellations de Taxon | 24561 |
| [24562] Centroceras | Appellations de Taxon | 24562 |
| [24564] Ceramium | Appellations de Taxon | 24564 |
| [24565] Cereus pedunculatus | Appellations de Taxon | 24565 |
| [24566] Cerianthus | Appellations de Taxon | 24566 |
| [24567] Chaetomorpha melagonium | Appellations de Taxon | 24567 |
| [24568] Chaetozone caputesocis | Appellations de Taxon | 24568 |
| [24569] Chaetozone gibber | Appellations de Taxon | 24569 |
| [2457] Hydroporus neglectus | Appellations de Taxon | 2457 |
| [24570] Chaetozone setosa | Appellations de Taxon | 24570 |
| [24571] Champia | Appellations de Taxon | 24571 |
| [24572] Chelonia | Appellations de Taxon | 24572 |
| [24573] Chondracanthus | Appellations de Taxon | 24573 |
| [24574] Chondria | Appellations de Taxon | 24574 |
| [24575] Chondrus | Appellations de Taxon | 24575 |
| [24576] Chorda filum | Appellations de Taxon | 24576 |
| [24577] Chrysymenia | Appellations de Taxon | 24577 |
| [24578] Chylocladia | Appellations de Taxon | 24578 |
| [24579] Cirratulus africanus | Appellations de Taxon | 24579 |
| [2458] Hydroporus nigrita | Appellations de Taxon | 2458 |
| [24580] Cirratulus cirratus | Appellations de Taxon | 24580 |
| [24581] Cirriformia tentaculata | Appellations de Taxon | 24581 |
| [24582] Cirrophorus furcatus | Appellations de Taxon | 24582 |
| [24584] Cladostephus spongiosus | Appellations de Taxon | 24584 |
| [24586] Clymenura tricirrata | Appellations de Taxon | 24586 |
| [24587] Clypeasteroida | Appellations de Taxon | 24587 |
| [24588] Codium adhaerens | Appellations de Taxon | 24588 |
| [24589] Codium fragile | Appellations de Taxon | 24589 |
| [2459] Hydroporus nivalis | Appellations de Taxon | 2459 |
| [24590] Colpomenia peregrina | Appellations de Taxon | 24590 |