Fine I'll ask the important questions.
T.Lex.
What if a Catholic priest were to just bless the entire ocean?
Would it turn the entire thing into holy water, or do priests have an effective blessing range?
Does that range increase based on their level?
Can the Pope bless the entire ocean?
YOU - are not helping.
(But, next time I feel like causing trouble at the parish council meeting with one of our priests, I'll bring that up.)
ETA
Upon further reflection, I think one priest can bless an entire ocean, but the effect is diluted across the entire volume. So, the nominal blessedness quotient is only increased slightly. It would take a whole bunch of priests to have any measurable impact.