the dolphin is often called a fish. it is really a mammal that lives in the sea. the dolphin must come to the surface to breathe. it can stay underwater six minutes before returning for air. often refferred to as the ''prankster of the sea,'' the dolphin is a fiendly animal. it seems to enjoy its contacts with humans.

the dolphin reaches a length of 8 to 12 feet. it swims incredibly fast at speeds up to thirty miles per hour. the animal makes a large number of sounds. these sounds help the dolphin get about. the sound waves tell the dolphin what obstacles are in its path.
dolphins travel in schools. highly social, the animals help each other. many scientists believe the dolphin is a highly intelligent animal. some think it is smarter than the ape.

the questions is that i need to underline the plural word so are those the right word that i need to underline or do i need to add more.
WORDS ( minutes, contacts, humans, feet, sounds, sounds, waves, obstacles, dolphins, schools, scientists) need answer thanks soo much :)

First of all, what about capitalization of the first word of a sentence?

I believe you missed "speeds" and "animals."

Sra

They are all right -- but you missed

speeds, miles, animals

To identify the plural words in the given passage, you need to look for words that indicate more than one of something. Based on the information you provided, the plural words that need to be underlined are:

- minutes: This is the plural form of the word "minute."
- sounds: This is the plural form of the word "sound."
- waves: This is the plural form of the word "wave."
- obstacles: This is already plural.
- dolphins: This is already plural.
- schools: This is already plural.
- scientists: This is already plural.

So, the correct words to underline in their plural form are: minutes, sounds, waves, obstacles, dolphins, schools, and scientists.