South Plaza Island

Sesuvium, sea lions, land iguanas and a rare hybrid found nowhere else

- EXPLORE THE ISLAND -

At a Glance: South Plaza Island

South Plaza Island

 

South Plaza is a small, uninhabited island located just off the eastern coast of Santa Cruz. Covering only 0.13 sq km / 0.05 sq mi (approximately 32 acres), it is one of the smallest visitor sites in the Galapagos, yet among the most concentrated in wildlife activity.

Formed by tectonic uplift rather than volcanic eruption, the island rises gently to around 23 metres above sea level, ending in dramatic sea cliffs that overlook open ocean.

Despite its size, South Plaza supports large colonies of sea lions, both land and marine iguanas, nesting seabirds, and the rare and elusive hybrid iguana. Its landscape is dominated by Opuntia cacti and the low-growing Sesuvium plant, which turns vibrant red during the dry season, giving the island its distinctive colouring.

From Galapagos Safari Camp, South Plaza is reached by boat in approximately one hour each way.

Iguana Divider

Exploring South Plaza with Galapagos Safari Camp

Safaris to South Plaza Island begin with a car transfer to Santa Cruz’s northern port, followed by a boat excursion to the island. As with all National Park visitor sites, tours are led by a certified naturalist guide.

Guests may join a shared boat with a shared guide, or travel on a shared boat with their own private guide for a fully private tour on land. A chartered boat can also be arranged for a completely private experience.

Below are the key elements that define a visit to South Plaza.

Coastal Landing

Arriving by dinghy, you step ashore onto a small dock often occupied by Galapagos sea lions. Curious juveniles lounge across the landing area while dominant males patrol nearby territories.

The trail begins immediately, passing through a dry, open landscape scattered with cactus and low shrubs.

South Plaza Island

Land Iguanas

South Plaza is home to a large population of Galapagos land iguanas. These yellow-brown reptiles are commonly seen basking in the sun or feeding on fallen cactus pads.

Marine iguanas also inhabit the island, and it is here that one of the Galapagos’ rarest curiosities has occasionally been documented: the hybrid iguana, the result of interbreeding between land and marine iguanas.

First recorded in 1977 by Professor Howard Snell, hybrids are sterile and uncommon, making sightings exceptionally rare. South Plaza remains the only island in the Galapagos where hybrid iguanas have been discovered.

A land iguana on South Plaza Island, Galapagos

The Sesuvium Carpet

One of South Plaza’s most distinctive features is its vegetation. Much of the island is covered in Sesuvium (Sesuvium edmonstonei), also known as Galapagos carpetweed.

During wetter months it appears bright green, but in the dry season chlorophyll levels decrease, and protective red and purple pigments become more visible. The result is a dramatic carpet of oranges and reds that contrast against the grey lava rock and green cacti.

Sesuvium on South Plaza Island

Opuntia Cacti

Also known as the giant prickly pear cactus, its large pads and fruit provide shelter and food for the island’s land iguanas and nesting birds.

Opuntia may flower at any time of year and its bright yellow flowers are an important source of nectar for insects.

South Plaza Island

Fallen Opuntia

If you come across any fallen Opuntia, take a closer look. Its trunk is built from layered, honeycomb-like fibres, and the pads reveal beautifully structured internal patterns.

The internal fibrous skeleton of a fallen Opuntia cactus trunk after the softer tissue has decayed away. What remains is the woody vascular framework — a lattice of interconnected fibres that gives the trunk its structural strength.

Clifftop “Wailing Wall”

The trail gradually ascends to the island’s highest point, approximately 23 metres above sea level, where sheer cliffs drop into the ocean below.

This exposed viewpoint is sometimes referred to as the “wailing wall” due to the sound of wind and seabirds echoing along the cliffs. Swallow-tailed gulls and red-billed tropicbirds nest here, taking advantage of the updrafts rising from the waves below.

South Plaza Island cliff

Sea Lions

At the eastern end of the island, bachelor sea lions congregate near the cliff edges, resting between challenges for breeding territories elsewhere.

A sea lion on South Plaza Island

Snorkelling

Visits to South Plaza are typically paired with a snorkelling stop nearby.

The surrounding waters are home to rays, reef fish, sea turtles and occasionally reef sharks. Playful sea lions may approach swimmers, while marine iguanas can sometimes be seen feeding underwater.

Snorkeling at South Plaza Island

Why Include South Plaza on Your Safari

Land iguana on South Plaza Island

 

South Plaza demonstrates how even the smallest islands in the Galapagos can hold remarkable ecological density.

Within a short and manageable walking circuit, visitors encounter land and marine iguanas, sea lions, cliff-nesting seabirds, seasonal colour shifts in vegetation, and the possibility, however rare, of glimpsing a hybrid iguana.

Its dramatic coastal cliffs, vibrant ground cover, and concentrated wildlife activity make it one of the most visually striking day excursions from Santa Cruz.

Look Out For!

Fauna

South Plaza wildlife

 

Audubon’s Shearwater
Red-billed Tropicbird
Magnificent Frigatebird
Blue-footed Booby
Nazca Booby
Common Noddy
Brown Pelican
Short-eared Owl
Cactus Finch
Ground Finches
Land Iguana
Lava Lizard
Marine Iguana
Galápagos Sea Lion
Yellow-tailed Mullet
Sally Lightfoot Crab

 

Flora

South Plaza Island flora

 

Bitterbush
Desert Plum
Leatherleaf
Prickly Pear Cactus
Galápagos Purslane
Spiny Bush
Galápagos Carpetweed
Puncture Weed

VOICES OF GALAPAGOS

Our Experts Say

Stephanie Bonham-Carter
Stephanie Bonham-Carter
“I love South Plaza for its carpet of sea-purslane bathing the island in seasonal changing colour, the surprising hybrid iguanas not seen anywhere else and the opportunity to observe old sea lion males withdrawing from their colonies and embracing the end of their life cycle.”

Disclaimer: As with any wildlife experience, we cannot guarantee sightings of every species mentioned. The information above is intended as a guide, based on the experience of our expert naturalists and previous guests of Galapagos Safari Camp.