Ideas:

Ga3-22 Ga3-23 Ga3-24

Here the mouth of the shark is closed and certainly it is no real shark. We can see that the 'head' is like an egg and the 'fins' just below the head are unlike real fins. So I hesitate to read this line as atua mango (the shark god).

In Mamari the atua glyph is no. 26, a number we have seen before. In Small Santiago Ga3-22 is no. 25, i.e. the shark is no. 26.

Small Santiago has another atua glyph too, no. 17, a number we recognize as half 34:

Ga3-10 Ga3-11 Ga3-12 Ga3-13 Ga3-14 Ga3-15 Ga3-16

In Sweden we have an old expression 'Fy sjutton' ('Fie seventeen!') meaning deep disgust and horror. Somewhere I have read that it is due to there having been gallows constructed with 17 stones. But there is no beginning in such things. Life cannot be described with cause and effect. 17 has been there for ever. By the way - in Ga3-14 there are 2 + 4 + 4 + 4 + 3 = 17 'feathers'.

In Keiti glyph no. 17 (Ea1-17) shows the shark in the moon.