Aipysurus eydouxii
Diet
Almost exclusively fish eggs
The beaded sea snake, also known as the marbled seasnake or spine-tailed seasnake, is a venomous snake in the family Elapidae. It is unusual among sea snakes in that it feeds almost exclusively on fish eggs. As part of this unusual diet it has lost its fangs, and its venom glands are almost entirely atrophied (Wikipedia, general species account).