If you are talking about the transatlantic cable then 1861.
Atlantic Telegraph Company was created in 1856.
Cyrus West Field (1819 – 1892) was an American businessman and one of the founders of the Atlantic Telegraph Company, the company that laid the first telegraph cable across the Atlantic Ocean in 1858.
Atlantic and pacific ocean
There is no Atlantic continent, it is an ocean. There is life in the Atlantic ocean.
The continent of Europe extends from the Atlantic Ocean to Asia.
The Atlantic is east of North America. It is the ocean that separates the American continent, north & south, from Europe & Africa.
Greenland is the largest island that is not considered a continent. It is part of the North American plate and is located in the North Atlantic Ocean.
Atlantic, Pacific and Arctic Oceans.
The North American continent has been moving westward due to the process of plate tectonics. It has been drifting away from the spreading center in the Atlantic Ocean, leading to the opening of the Atlantic Ocean and the formation of the mid-Atlantic ridge.
The continent of Europe extends from the Atlantic Ocean to Asia.
The Atlantic Ocean has many coast lines, Africa, Europe the North and South American continent etc. You will need to specify which part of the coastline you mean
Lake Maraicaibo