Drowned Hives (溺死ハイブ Dekishi haibu) are "drowned" variants of normal Hives added to the Afterbirth DLC. They can be encountered in Chapter 2.
They appear identical to the Hive with the exception of blue colors and swollen cheeks.
- From the Bestiary, Drowned Hive's "scribbled" sprite turns out to be the Selfless Knight, likely an error. (?)