Oceans

What did early ocean scientists use to measure the distance to the ocean floor?

More Questions from Oceans
Which of the following do sperm whales not have on their body?
Reveal Answer
Which ocean lies between Africa and Australia?
Reveal Answer
What produces ocean tides?
Reveal Answer
Where is the Bar Reef located?
Reveal Answer
What is the front of a boat called?
Reveal Answer
The beluga whale is what color as an adult?
Reveal Answer
What do Baleen whales lack that other whales have?
Reveal Answer
More than 50% of all lakes in the world are in which country?
Reveal Answer