Vocabulary Practice: Bottlenose Dolphins

Dolphins are mammals. There are various types of dolphins but bottlenose dolphins are the most common dolphin ..........
species
summary
flight

Dolphins live in the ocean. Oceans are made up of ......... water.
filtered
salt
fresh

Dolphins are very intelligent and use whistles and squeaks to ......... with other dolphins.
melt
arrest
communicate

They understand each other well and scientists believe that they have their own ..........
language
books
cards

Dolphins look like they have fun in the ocean because they play with each other as well as ......... out of the water. Another word for this is jump.
shriek
run
leap

Dolphins and whales are examples of sea or ......... mammals because they are warm-blooded but live in the ocean.
marine
air
land

Fish and sharks, however, are .........-blooded animals.
cold
warm
hot

Fish can breathe under water because they have .......... Dolphins don't have these.
ears
gills
scales

Dolphins don't have ......... like fish but, instead, have smooth, rubbery skin.
surfs
fur
scales

Fish can breathe under water but dolphins have ......... so they must come up to the surface for air.
hearts
kidneys
lungs