Indentify three contributions the greeks provided for ocean exploration.

Piloting:

The ancient Greeks developed the phenomenon of piloting which made ocean exploration easier. Piloting is a technique in which a reference is set so that a person does not get lost while navigating.

Prediction of tides:

Pytheas, a Greek geographer, discovered that tides could be predicted in an ocean, based on the phases of the moon.

Lines of Longitude and Latitude:

Eratosthenes was a Greek mathematician who calculated the circumference of the Earth and formed the lines of longitude and latitude which was an essential concept for the exploration of oceans.