Neon Eel This close-up view of the Gymnothorax undulates species of moray eel shows its distinctive pattern of light, lime-green speckles on a dark olive background. Its sinister smile brings to mind the malicious twin moray eels from Disney’s “The Little Mermaid.” Credit: Cigdem Sean Cooper

Neon Eel

This close-up view of the Gymnothorax undulates species of moray eel shows its distinctive pattern of light, lime-green speckles on a dark olive background. Its sinister smile brings to mind the malicious twin moray eels from Disney’s “The Little Mermaid.”

Credit: Cigdem Sean Cooper