A sea-lion.  There are no seals in the Galapagos Islands.

Blue-footed boobies

Great frigate bird

Galapagos penguins - the most northern penguin habitat in the world

Red-footed boobies

Marine iguanas.  They have flatter tails than the land iguanas. 
 All iguanas in the Galapagos Islands are vegetarian and less than 95cm in length.

An albatross feeding its young

We spotted a minke whale

Some dolphins riding the bow-wave