The only existing animals that beat those sizes are all whales. Whales are not herbivores but there are relatively few herbivorous animals in the sea. Their enormous weight is supported by the ...

Herbivorous animals are vegetarians. They only eat plants. Herbivores can be very picky eaters. Scientists group these creatures by the parts of plants the herbivore eats. Frugivores only eat fruit.

Since these animals are related to jellyfish, they can also sting. Velella are predators and hunt microscopic plankton on the ocean's surface. (See more pictures of diaphanous, sometimes deadly ...

I think we can expect to increase demand for a variety of seafood, and certainly herbivorous animals would play a part in that. But how you change the consumer's preference is a real, real challenge.