Ruppell's Griffons fly up to​ 37,000 feet. A sperm whale can swim to​ 3,000 feet below sea level. Using the figure shown as a​ guide, which integer represents sea​ level? Explain.
37,000 ft
high
3,000 ft below
sea level
The integer
nothing best represents sea level. It is

neither positive nor negative.
the depth the whale can swim.
the height the griffon can fly.