Assertion: emperor penguin's foot | /r/HasProperty | 550 meters
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Source sentences:
text: They can dive to a depth of 1,800 feet (550 meters) and hold their breath for up to 22 minutes.
text: They can dive down to 1800 feet (550m) below the surface and stay underwater for over20 minutes.
text: They are the world’s deepest-diving birds, capable of diving to depths of approximately 1,800 feet (550 meters) in search of food.