| Group | Code | Denomination | Number |
| A.0 | BIO | biology and physiology of the coral organism | 12 |
| A.1 | MOR | soft body morphology | 233 |
| A.2 | MET | metabolism and physiology | 201 |
| A.3 | CHM | chemical aspects | 396 |
| A.4 | NUT | nutrition | 146 |
| A.5 | ZOO | zooxanthellae | 440 |
| A.6 | REP | reproduction and larval biology | 502 |
| A.7 | COL | colonization | 283 |
| A.8 | DEV | skeletal morphology, structure and development | 742 |
| A.9 | CAL | calcification | 340 |
| A.10 | VAR | skeleton variability | 115 |
| A.11 | DNA | DNA analysis | 145 |
| A.12 | DIS | diseases | 490 |
| A.15 | BEH | behaviour | 62 |
| B.0 | ECO | Ecology | 123 |
| B.1 | POP | population ecology, community structure, distribution patterns | 756 |
| B.2 | COM | competition and interaction | 102 |
| B.3 | ASS | associations (with non-coral organisms) | 638 |
| B.4 | GEO | biogeography | 162 |
| B.5 | BDV | species richness and biodiversity | 101 |
| B.6 | EFF | physical and chemical influences | 909 |
| B.7 | POL | water pollution | 170 |
| B.8 | DES | disturbance up to destruction | 455 |
| B.9 | TAP | Taphonomy | 19 |
| C.0 | DOC | Corals in the literature | 88 |
| C.1 | TAX | taxonomic descriptions and revisions | 739 |
| C.2 | SYS | systematic works | 27 |
| C.3 | RPO | report on occurrences, faunal inventory and faunal lists | 1430 |
| C.4 | BIB | bibliographies | 24 |
| C.5 | PRO | collected papers | 54 |
| C.6 | THE | theses, dissertations | 432 |
| C.7 | MUS | museums and collections | 59 |
| C.8 | RMT | research methods | 160 |
| C.9 | TER | terminology | 11 |
| C.10 | MIL | genus Millepora | 970 |
| C.11 | HEL | genus Heliopora | 262 |
| C.12 | TUB | genus Tubipora | 231 |
| C.13 | GUI | field guides | 177 |
| D.0 | TIM | Corals in time | |
| D.1 | EVO | evolution | 105 |
| D.2 | PAL | palaeontological aspects | 99 |
| D.3 | CHR | sclerochronology, stable isotopes | 544 |
| E.0 | MEN | Corals and men | |
| E.1 | MGM | management | 436 |
| E.3 | AQU | aquarium | 91 |
| E.4 | TRA | trade, CITES | 40 |
| E.5 | END | endangered species | 10 |
| E.6 | USE | economic aspects (in medizine, as construction material) | 104 |
| E.7 | DAN | corals as danger source | 4 |
| F.0 | MSC | miscellaneous | 46 |