seals is a form of:

Testes



Plural form of: testis
noun
1.
(PLURAL) (1. The reproductive gland in a male vertebrate, the source of spermatozoa and the androgens, normally occurring paired in an external scrotum in human beings and certain other mammals. 2. An analogous gland in an invertebrate animal, such as a hydra or a mollusk) ពងស្វាស (មនុស្សរឺសត្វ)