It's an interesting thought, but I suspect that you would need to play those sounds with thumping bass and serious wattage to emulate a sperm whale in any meaningful way. And even then, it might be a little counter-productive...
Sperm Whales Are So Loud They Could Potentially "Vibrate" You to Death
There was an update to this. It was a cookie cutter shark, apparently: Pencils with teeth: meet the tiny cookiecutter shark that attacked a catamaran off Cairns
Now the only mystery about this story is why anyone would sail offshore on an inflatable catamaran.
Maybe they don't like competition and prefer to stay dark, but COLREGS doesn't make any allowance for that and quite rightly. The OP implies that the fishing vessel was making way with, apparently, an all-round white as the only nav light in use. AIS would be nice, but correct use of navigation...
Er... wow! 🤯
Woe betide any species that gets in this guy's way. Death awaits, but not before a thorough and damning critique of their ancestors' evolutionary choices.
Working on the assumption that sand, suspended in the water, disrupts the orcas' sonar, how long do we need to keep chucking it before they get bored and wander off? How do we distribute it effectively? And why doesn't this wonder material deter them from chasing seals up beaches?
I sincerely...
I read somewhere that he was planning to attach himself directly to the rock, so that he would remain attached even if his survival pod was swept away. I don't know if that report was true, but I wouldn't judge it a great tactic to be dashed against the rock with no shelter. Anyway, seems...