Swirling elemental that rises from a torrent of water in humanoid form

Small, cute sea monster with three tentacles Model: Baby Black Lagoon Creature by bennettklein, licensed underCC BY-SA 3.0 .

Small, slender, smooth sea snake with wing-like fins Model: Sea Dragon by mz4250, licensed under CC BY 3.0 .

Swirling elemental wearing armor and carrying a large trident, rising in humanoid form from a torrent of water

Gigantic sea snake with fins and a dragon-like head. Model is 16cm long, 14cm wide and 13cm high.

Deep-sea fish with teeth and spiny dorsal and caudal fins Model: A Sea Bull-Calf by Zorum, licensed under CC BY-SA 4.0 .

Undead, half-rotted sea snake with open throat coiled around a stone