Five Fascinating Facts About the Atlantic Ocean

Second Largest: Covers ~106 million km², second only to the Pacific.
Depth Extremes: Average depth ~3,700 m; deepest point is Milwaukee Deep in the Puerto Rico Trench (~8,600 m).
Variable Salinity: Average ~35 ppt, higher near equator, lower near poles.
Powerful Tides: Strong gravitational tides, especially in coastal zones like the Bay of Fundy.
Rich Biodiversity: Hosts vast marine life—fish, whales, dolphins, sea turtles—and diverse habitats: coral reefs, kelp forests, seagrass meadows.

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