Testing Shark Attack string combos today. Note that 66B+K never combos into the A+B follow up except on LH, which doesn't give the desired launch, but the A+BK follow up is actually a Natural Combo. For all of the below, assume that you've conditioned the opponent to block 66B+K and not expect a follow up, or that you did something like whiff the 66B+K and then continued the string if you anticipate a punish. You'll only ever land this string through mind games. I'll denote the whiff or irrelevance of the first hit by putting it in parentheses.
That said, on to the combos:
(66B+K)A+BK, [G], 9K, 4AA+B[2], 44B+K, 3BB - for this one you need to hold [G] after the K launch to turn back around after the A+BK part of the first string launches, because they get sent behind you. Ditto for anywhere I make the same notation below.
(66B+K)A+BK, [G], 9K, 6KA+B - for the ring out.
(66B+K)A+BK, BT 2A+K - Because swag. You have to time the 2A+K pretty carefully.
I'm sure there are more permutations on this. Also, the [G], 9K, 4AA+B might be a tall characters only thing. I was testing on Groh, didn't try it on Talim or whatever. Of course, you can skip the 9K, and just go straight into [G], 4AA+B instead.
Edit: Tested on Talim - she Ukemi'd the last hit of 3BB, but that could be a spacing thing. Either way, the combo is mostly legit.
Bonus nonsense -
(66B+K)A+BK, BT 2B+K, BT IND 2A+K appears to trap all Ukemi directions lol. Total nonsense, but we don't play Yoshi to not do nonsense, amirite?!
Further Edit - was just testing the BT 2B+K, BT IND A+K stuff, and uh, IND A+K hits grounded, so I think this is actually just a real combo? Ridiculous!