Expansion of the Suez and Panama Canals in recent years has led to the increased passage of non-native species. The Suez Canal separates the Mediterranean Sea from the Red Sea in Egypt. And the Panama Canal, located in Panama, separates the Caribbean Sea from the Pacific Ocean. In the Suez Canal, expansions have led to the dilution of the Bitter Lakes of Suez, which were built on existing salt deposits and have served as a high salinity barrier to non-native species spread. The Panama Canal has a freshwater barrier, Lake Gatun, which has also seen an increase in the movement of non-native species due to expansion.

Reference:

Castellanos-Galindo, G.A., Robertson, D.R. & Torchin, M.E. A new wave of marine fish invasions through the Panama and Suez canals. Nat Ecol Evol 4, 1444–1446 (2020). https://doi.org/10.1038/s41559-020-01301-2