In the interest of variations on this song,
I'm going to summarize the lyrics on the version I learned.
Not spell them out, as in earlier posts here;
just supply those few words, per verse, which change each time;
the rest is presumed.

THE VERSION FROM THE CATHOLIC RETREAT

Papa Shark! (four times, with scatting)

Mama Shark!

Baby Shark!

Grandpa Shark!

... I forget !... something about Swimming!

Saw A Shark!

Swimming Faster!

Shark Attack!

Lost My Arm!

Lost My Leg!

Lost My Head!

Now, I'm dead!

Gone To Heaven!

(well, what do you expect, from a Catholic parish ...)


As to the German Kleiner Hai, it actually ends with
Alexandra Müller wagging her pointing finger
at the shark that just finished "fressen", stuffing itself,
and chanting :

Böser Hai! dimm dimm dimmdimm dimmdimm
Böser Hai! dimm dimm dimmdimm dimmdimm
Böser Hai! dimm dimm dimmdimm dimmdimm
Böser Hai!

Which I understand to mean:
Naughty Shark!!
Naughty, Naughty Shark!