It is also found in the Suez Canal , having entered the canal 's northern end before 1927 .
It is also was discovered in 1957 in the Queen 's Dock , Swansea , presumably having been transported by shipping from the Mediterranean Sea .
It is also found in the Suez Canal , having entered the canal 's northern end before 1927 , and was discovered in 1957 in the Queen 's Dock , Swansea , presumably having been transported by shipping from the Mediterranean Sea .