Turtles spend most of their lives in water. They are adapted for aquatic life, with webbed feet or flippers and a streamlined body. Sea turtles rarely leave the ocean, except to lay eggs in the sand. Freshwater turtles live in ponds and lakes, and they climb out of the water onto logs or rocks to bask in the warm sun.
The one about the store uses the semicolon correctly.
Sergei considers the goldfish to be his friend. From the statement, it
is shown that Sergei has trust issues with other beings (May it be a human or
animal). He may have a dreadful experience in the past that prevents him from
befriending others. And he made an exception with the goldfish because he found
out that the goldfish will not leave him even if he is troubled.