| Korallenriff | coral reef |
| Korallenfisch | butterfly fish |
| Korallenmeer | Coral Sea |
| Korallenmöwe | Audouin's gull |
| Korallenbank | coral reef |
| Koralleninsel | coral island |
| Korallenotter | coral snake |
| koralle | coral |
| Koralle | coral |
| Korallengarten | coral garden |
| Korallenpolyp | coral polyp |
| krallen | clamp |
| Kavallerie | cavalry |
| Kavallerist | cavalryman |
| Felsenriff | reef |
| Kordilleren | American Cordillera |
| Korpulenz | corpulence |
| Koreanerin | Korean |
| Korollar | corollary |
| Korolle | corolla |