Let's look at your sentence step by step and make it correct.
Your sentence is: "An albatross spends most of its life flying over the sea, landing only visits to eat and to nest." It has a small mistake that makes it unclear.
The phrase "landing only visits" is not correct. We want to say that the albatross only lands when it needs to eat or nest.
Here is a better way to say it: "An albatross spends most of its life flying over the sea, only landing to eat and to nest." This means the bird mostly flies and lands just for those reasons.
So, the corrected sentence is:
"An albatross spends most of its life flying over the sea, only landing to eat and to nest."