In sea water you have 10 times as many viral particles as bacteria. This amounts to roughly 10^30 viral particles in all the oceans. Estimate how many virions you ingested last time you went for a swim in the ocean and gulped a little bit of water. *

As usual state your hypotheses and explain your rationale. You can use the internet to get estimates. Or you can come up with your own estimates as long as you explain your rationale behind those numbers.