Read the following passage. Then answer questions 1 – 2.
The blue whale is the largest animal in the world. It is even larger than the biggest dinosaur that ever lived. A blue whale can grow up to 100 feet long or more. That’s about the size of a jet. A blue whale can weigh 160 tons. That’s as much as 30 elephants! Almost everything about a blue whale is huge. For one thing, its heart is as big as a car. The blood vessels, or tubes, that carry blood to the heart are big, too. They are so large that a child could crawl through them! The blue whale’s skeleton is enormous. It can weigh more than 50,000 pounds!
It is amazing that the world’s largest animal only eats tiny animals called krill. Krill look like shrimp. A blue whale can eat thousands of pounds of krill a day. Every time it swallows, more than 100 pounds of krill go down its throat.
The giant squid lives deep beneath the ocean’s surface. It is one of the biggest animals in the sea. It is not a mammal or fish. Scientists are not sure how big they really are. Some say they are as long as 60 feet. Others say they are around 35 feet. The giant squid has eight arms, plus two longer arms called tentacles. These tentacles are as long as a school bus! Each tentacle has large suckers ringed with sharp “teeth” for catching prey.