A more thorough explanation:

ALTUM MARE

Altum mare is a Latin term that refers to the high seas or deep seas.

1. The ship sailed into the altum mare, where the waves were high and the winds were strong.

2. The altum mare is home to many different species of marine life, including whales, sharks, and dolphins.

These examples illustrate the definition of altum mare by showing how it refers to the vast and often treacherous open waters of the ocean. The first example describes a ship encountering rough conditions in the altum mare, while the second example highlights the diverse ecosystem that exists in these deep waters.