The 64-year-old's wife and daughter were watching.
Flights, including one from London Heathrow, has been diverted.
The dolphins were seen swimming in endless circles or floating aimlessly by the gate.
Pope Leo XIV,who has sparred with the Trump administration over its immigration crackdown,spent the Fourth of July honouring migrants who have died trying to reach Europe to find freedom.
The couple's bodies were found by their son on Tuesday after he learned his father had failed to turn up for work.
'I have never seen nests like this before - and I have seen many, many bird nests.'
