So, when the tempest bursting wakes the war, / the justling winds in conflict rave and roar, / South, West and East upon his orient car, / the lashed woods howl, and with his trident hoar / Nereus in foam upheaves the watery floor.
Source: tatoeba (6825031)
Thus in vase pictures, when Poseidon upheaves the island of Cos to overwhelm the Giant Polybotes, the island is represented as an immense mass of rock; the parts which have been under water are indicated by a dolphin, a shrimp, and a sepia, the parts above the water by a goat and a serpent.
Source: tatoeba (11778783)