Shoreline Creatures of the Galapagos
Contents
- How do Sally Lightfoot Crabs in Galapagos Survive?
- What do Sally Lightfoot Crabs eat?
- What do Sally Lightfoot Crabs eat?
- What adaptations have they developed?
- How do Sally Lightfoot Crabs in Galapagos breed and reproduce?
- Where can I see Sally Lightfoot Crabs in Galapagos?
- Hover your cursor or tap here to find out!
- The best islands to see them are:

Spot Sally Lightfoot crabs also known for their unique biota.
Saltwater crabs pervade almost every shore you visit, but in the Galapagos Islands – which are known for their unique biota – there is only one species that really stands out from the rest. Sally Lightfoot crabs in Galapagos are popular among tourists due to their remarkably bright colors and agility. This magnificent creature is able to dance through the deep black lava rocks and withstand the crashing waves of the Pacific.
Actually, this crab is rumored to have been named after a Caribbean dancer due to its agility and its lightfoot way of dancing! The Sally Lightfoot crab has ten legs that allow it to run in four different directions. Additionally, their spectacular reflexes and speed make it seem as if they could predict the mind of their predator. This feature also makes them next to impossible to catch! As writer John Steinbeck once commented in The Log of the Sea of Cortez that, when it comes to catching the crab, “[man’s] tendency eventually is to scream curses, to hurl himself at them, and to come up foaming with rage, bruises all over his chest.”

Discover these beautiful creatures in Galapagos shores.
How do Sally Lightfoot Crabs in Galapagos Survive?

Sally Lightfoot crab hiding from its predator.
What do Sally Lightfoot Crabs eat?
Nevertheless, these colorful crabs are opportunistic predators, meaning that they will eat almost anything they come across including barnacles, young sea turtles, other crabs, and young birds, as well as dead fish, broken eggs, and even bird droppings and sea lion placenta. Their claws become very useful for this varied diet, like powerful and sharp spoons, they use them to rip apart the meal and spoon out the goods. This role as beach predators, grazers and scavengers make them critical to a healthy beach ecosystem.
What do Sally Lightfoot Crabs eat?
Nevertheless, these colorful crabs are opportunistic predators, meaning that they will eat almost anything they come across including barnacles, young sea turtles, other crabs, and young birds, as well as dead fish, broken eggs, and even bird droppings and sea lion placenta. Their claws become very useful for this varied diet, like powerful and sharp spoons, they use them to rip apart the meal and spoon out the goods. This role as beach predators, grazers and scavengers make them critical to a healthy beach ecosystem.

Spot this beautiful and interesting small creatures.
What adaptations have they developed?
In addition to their speed, these agile crabs have a few tricks to escape the claws of hungry hunters. First, we must take into consideration that the Sally Lightfoot crab has a very tough shell to protect its fleshy body. This shell tends to become stronger over time. However, this also means that their shell is significantly tender when they are young, but there’s nothing to worry about as their first shells are dark brown or black so they can blend in with the rocks and hide from their predators.

Beautiful Sally Lighfoot crabs blending in with the rocks.
On the other hand, if the crab feels severely threatened it is able to detach one of its legs (which it can regenerate) or spray water as a defense mechanism to shock the predator. However, the primary purpose of holding water in their shell is to allow them to breathe during their time on land. As they spend a large amount of time outside of the water, they are able to pour liquid over their gills every once in a while to keep breathing.
Considering that the Sally Lightfoot crab has so many predators, one would think that blending in is one of their top priorities. But they don’t. Most Sally Lightfoot crabs have stunning tones across their shells that consists of bright reds and blues. Others have pink or yellow markings that make for a beautiful contrast with white sands and black rocks.In fact, as their shells get tougher, they also become brighter. Baby crabs have small red spots on their shells and, every time they molt their shell, the spots become larger until they acquire the typical adult coloring. When Sally Lightfoot crabs become adults, they are virtually predator-free!

Sally Lightfoot crabs spotted with a marine iguana.
Fun fact: a match made in heaven!
If you make your way to the Galapagos Islands, you could be witness to a postcard-worthy scene! While marine iguanas rest peacefully on the rocks by the beach, Sally Lightfoot crabs tend to climb on top of them and eat all the little parasites and fleas that have latched onto their dry skin.
How do Sally Lightfoot Crabs in Galapagos breed and reproduce?
Sometimes, when exploring rocky coastlines, you may be lucky enough to find a recently abandoned shell. These crabs will leave that old shell perfectly intact, making you think the shell itself is still alive!
Where can I see Sally Lightfoot Crabs in Galapagos?
So, will you be lucky enough to see these amazing crabs on your Galapagos cruise? Absolutely!