Turtles and Tortoises — Reading Comprehension Lesson

Reading Passage

Turtles and Tortoises

Turtles and tortoises are reptiles that belong to the order Testudines — one of the oldest groups of reptiles on Earth. They have existed for over 200 million years, outliving the dinosaurs. The most distinctive feature of all turtles and tortoises is their shell, which is made of bone and covered with plates called scutes. The shell is fused to the animal’s spine and ribcage — it is not a portable house that the animal can leave. It is a permanent part of their body.

Though turtles and tortoises are closely related, they are adapted to very different habitats. Turtles are generally aquatic or semi-aquatic — they live in oceans, rivers, lakes, and ponds. Sea turtles spend almost their entire lives in the ocean, coming to shore only to lay eggs. Freshwater turtles divide their time between water and land. Turtles typically have flat or streamlined shells and webbed feet or flippers that help them swim.

Tortoises, on the other hand, live entirely on land — usually in dry, grassland, or desert environments. They have dome-shaped shells and sturdy, column-like legs adapted for walking on land rather than swimming. Tortoises are well adapted to dry conditions — they can store water in their bladders and may go for months without drinking. Some tortoises are among the longest-lived animals on Earth, with individuals known to live well over 100 years.

Both turtles and tortoises are ectotherms — they cannot regulate their own body temperature internally and rely on their environment to warm or cool themselves. You will often see turtles basking on rocks or logs in the sun to raise their body temperature. In cold weather, many turtles hibernate underwater, slowing their metabolism and absorbing dissolved oxygen through their skin. Tortoises in hot, dry regions may estivate — entering a dormant state during extreme heat and drought.

Many species of turtles and tortoises are endangered due to habitat destruction, pollution, collection for the pet trade, and hunting for their meat and shells. Sea turtles face additional threats from plastic pollution and getting caught in fishing nets. Conservation efforts include protecting nesting beaches, reducing plastic in the oceans, and setting up breeding programs in zoos and wildlife sanctuaries. Turtles and tortoises have survived for millions of years — with our help, they can continue to thrive.

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