-
150
B.C. Ptolemy introduces latitude and longitude to the world map
He was the first to place a grid system on a map and use the same grid system for the entire planet -
245
B.C Erathenes Navigation
Determined the circumference of the world -
325
B.C. Pytheas discovered an ocean.
Discovered the Arctic Ocean. -
Jan 6, 1440
Prince Henry The Navigator established a sailor school
Prince Henry established a school for the study of the arts of navigation, mapmaking, and shipbuilding. -
Jan 5, 1519
Ferdinand Magellan Sailed around the world
Magellan's expedition of 1519–1522 became the first expedition to sail from the Atlantic Ocean into the Pacific Ocean and the first to cross the Pacific Ocean. -
James Cook found islands
Helped find many known islands, such as Hawaii,the Cook Islands,and many more. -
Benjamin Franklin; Ocean Currents
Discovered ocean currents. -
Matthew Fontaine Maury published the first book on oceanography.
Physical Geography of the Sea 1855, the first extensive and comprehensive book on oceanography to be published. -
Challenger Expedition
This expedition produced the first global cross-section of the ocean's depth profile and identified over 4,700 ocean-dwelling animal species never before known. -
Bathysphere
A spherical deep-diving chamber where people can study the oceans and deep-sea life. -
SONAR; Mapping the Ocean Floor with Echo Sounding
Echo sounding is the key method scientists use to map the seafloor today -
B.C. Pheonicians; circumnagivated Africa.
Phoenicians circumnavigated
Africa and sailed the North Atlantic as far
as European Coast and British Isle. -
A.D. Eric The Red Discovered Baffin Island.
Eric the Red sailed westward from
Greenland and discovered Baffin Island. -
A.D. Eric’s son, Leif Ericson discovered Vineland
Discovered what was
then called Vineland and spent the winter in an area
of North America we call Newfoundland. -
B.C. Herodontus
constructed a map of the
Mediterranean Sea.
