A tagged great white shark named Lydia on Sunday became the first known white shark to swim across the Atlantic Ocean.

The 2,000-pound female shark, which was tagged by Ocearch scientists last March off Jacksonville, Florida, crossed the mid-Atlantic ridge on Sunday morning, officially entering the eastern Atlantic.

Lydia, one of several white sharks fitted with SPOT tags in an attempt by Ocearch researchers to learn more about their movements, had traveled nearly 19,000 miles in various directions since she was tagged.