You’ve seen a Tiger in the water. You’re 1 up on me. My theory is that any ocean dive is by definition a shark dive — you just mostly don’t see them (but they ‘see’ you). The risk can be managed with most species. Tigers, Bulls & Whites are not among them.
I’ll tell you I was more afraid once when I was lobstering in murkey water. Vis about 10 feet and I saw two extremely large shadows go by just where I couldn’t make out what they were.
As I got to the boat two 7 or 8 foot tarpon swam by and they were at least three foot wide.
Ok, went back to getting more lobster.
Still the pucker factor was such that you couldn’t shoot a b.b. in to my rectum with a very high power rifle.