Dolphin is a symbol of divination, wisdom and prudence. In Greek mythology dolphin was a mediator between this world and the immortal one: it was a guide of souls. That’s why in Christian symbolism it represented Christ.
Anchor stands for a sign of political stability. In Christianity hope is as an anchor for the soul. Dolphin and anchor presented together symbolise the proverb Festina lente which means “Hasten slowly”.