How many hearts does an octopus have?
Which ocean creature can have a heart weighing up to 400 pounds?
Great White Shark
Blue Whale
Giant Squid
Whale Shark
What percentage of Earth's oxygen is produced by marine plants and algae?
How long can a sea turtle hold its breath underwater?
2 hours
4 hours
5 hours
7 hours
What is the average lifespan of a wild octopus?
1-2 years
3-5 years
7-9 years
10-12 years
At what depth does the ocean's 'midnight zone' begin?
200 meters
500 meters
1000 meters
2000 meters
How fast can a sailfish swim at maximum speed?
50 mph
68 mph
70 mph
85 mph
What percentage of marine species have yet to be identified by scientists?
What is the maximum depth of the Mariana Trench, Earth's deepest known point?
8,848 meters
10,911 meters
11,034 meters
12,262 meters
What is the maximum recorded size of a Giant Pacific Octopus?
16 feet
24 feet
30 feet
33 feet
What percentage of Earth's volcanic activity occurs underwater?
How many species of shark are bioluminescent?
What is the average water temperature in the deep ocean?
How many known species of sea horses exist?
What percentage of the world's coral reefs have been lost since 1950?
How many species of fish live in the ocean?
How many tentacles does a box jellyfish have?
What percentage of Earth's known species live in the ocean?
