What is meant by the line for my love and loyalty are as fish to the sea?

The line "for my love and loyalty are as fish to the sea" suggests that the speaker's devotion and fidelity are as vast and abundant as the sea's fish population. Just as fish thrive in water, the speaker's love and loyalty are inherent and natural, deeply connected to their essence. This metaphor emphasizes the depth and boundlessness of their feelings, highlighting that such emotions are integral to their identity.