| español | spa-000 |
| hidra | |
| Sambahsa-mundialect | art-288 | hydra |
| asturianu | ast-000 | hidra |
| беларуская | bel-000 | гідра |
| català | cat-000 | hidra |
| Deutsch | deu-000 | Hydra |
| Deutsch | deu-000 | Wasserschlange |
| ελληνικά | ell-000 | ύδρα |
| English | eng-000 | Hydra |
| English | eng-000 | hydra |
| Esperanto | epo-000 | hidro |
| føroyskt | fao-000 | sjógvormur |
| français | fra-000 | hydre |
| magyar | hun-000 | hidra |
| Ido | ido-000 | hidro |
| italiano | ita-000 | idra |
| 日本語 | jpn-000 | ヒドラ |
| 日本語 | jpn-000 | 毒蛇 |
| 日本語 | jpn-000 | 海へび |
| 日本語 | jpn-000 | 腔腸動物 |
| Latina Nova | lat-003 | Hydra |
| Nederlands | nld-000 | hydra |
| Nederlands | nld-000 | waterslang |
| Nederlands | nld-000 | zoetwaterpoliep |
| português | por-000 | hidra |
| română | ron-000 | hidră |
| русский | rus-000 | гидра |