Yes; however, the preferred plural of dolphin is simply dolphins. In fact, most dictionaries I have viewed-Merriam Webster's included-do not even list dolphin as an acceptable plural form of the marine mammal. Thus, dolphin as a plural form can be considered substandard.
What it boils down to is this: Unless you strongly prefer using dolphin as both a singular and plural noun, use dolphins when speaking about more than one dolphin. However, when someone else uses dolphin as a plural noun, realize that he or she is not incorrect.
The word dolphin is singular.The plural would be dolphins.A singular example sentence is: The dolphin swam off into the sunset.A plural example sentence is: The dolphins danced in the water.
The noun 'dolphin' is singular, a word for one of a type of marine mammal. The plural noun is dolphins.The noun 'children' is plural, a word for two or more young humans. The singular noun is child.
It is both a singular or plural noun.
Yes, the noun sheep is both singular and plural.
The word "ground" can be both singular and plural. Singular: "The ground is wet." Plural: "The grounds of the park are well-maintained."
Fish is both singular and plural.
Epidermis is both singular and plural
"Lens" is both singular and plural.
Fish is both singular and plural.
The verb reviewed is used after both singular and plural nouns.
Verbs are not plural or singular. Melting comes after both plural and singular nouns.
"You" can be both singular and plural.