Marine Life
What is the largest species of shark?
Whale Shark
What kind of waste is most commonly found polluting oceans?
Plastic
What is the name of the area where freshwater rivers meet the ocean?
Estuary
What is the term for water that is safe to drink?
Potable water
What percent of the Earth’s surface is covered by water?
About 71%
What marine animal is known for its intelligence and use of echolocation?
Dolphin
What term describes an excessive amount of nutrients in water, often from fertilizer runoff?
Eutrophication
What type of aquatic habitat is home to coral and extremely biodiverse?
Coral reef
What do we call the process of removing impurities from water to make it safe?
Water purification
Which ocean is the largest in the world?
Pacific Ocean
What is the name of the tiny animals that drift in the ocean and serve as food for many marine species?
Zooplankton
What gas, released by burning fossil fuels, causes ocean acidification?
Carbon dioxide (CO₂)
What zone of the ocean receives no sunlight?
Aphotic zone
What unit is used to measure the acidity or alkalinity of water?
pH
What is the name of the deepest known part of the ocean?
Mariana Trench
What type of fish can inflate its body to avoid predators?
Pufferfish
What major event in 2010 caused one of the worst oil spills in history?
Deepwater Horizon oil spill
What is the term for the coastal area that is above water at low tide and underwater at high tide?
Intertidal zone
What term refers to the cloudiness of water caused by particles?
Turbidity
Which sea creature has three hearts and blue blood?
Octopus
What is the name of the symbiotic relationship between clownfish and sea anemones?
Mutualism
What is the name for pollutants that accumulate in organisms and move up the food chain?
Bioaccumulation
What is the largest aquatic habitat on Earth?
The open ocean (pelagic zone)
What is the maximum contaminant level for lead in drinking water, according to the EPA?
15 parts per billion (ppb)
What is the name of the process by which water travels through the atmosphere and returns to the Earth?
The water cycle (or hydrologic cycle)