The Leviathan above is the Righteous-One, like a fish that is
The ‘bariaḥ∞pole snake’: this is the one of whom it is stated: (Ex. 26:28)... the middle pole∞briaḥ within the planks... – and this is the Middle Pillar which is called ‘middle’ (tikhon), because it is the Middle Pillar. Its two ‘fins’, right and left, are from where the Torah is given, its two ‘scales’ – the two pillars of truth☉Netzaḥ-Hod.
Higher Shekhinah is the sea. Lower Shekhinah is: (Prov. 30:19) The way of a ship, in the heart ∞lev (=32) of the sea, which is the 32 mentions of ELQYM in the act of creation.