Iguanids

They do get their food from the sea, but it's not prey.

The marine iguanas of the Galapagos are, like most lizards in the family Iguanidae, herbivores, as Darwin knew, really.

Their ancestors, plant-eating iguanas from the South American mainland, passed their herbivorous tendencies down to their descendants, both.

terrestrial and marine because there are land iguanas in the galapagos too three species of them and they spend their time munching on cacti like the prickly pear some other types of plants too and an occasional invertebrate or bit of carrion but mostly it's cacti The marine iguana feeds on marine algae, seaweed most people would probably call it, although most familiar seaweeds, like kelp, say, are what's called brown algae.