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El Refugio de Potosí
A Center for Wildlife Conservation and Environmental Education
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Our Whale Story
El Refugio de Potosí is custodian to the only sperm whale skeleton on display in Mexico. At nearly 18 meters, it is one of the largest on exhibit in the world.

Preparing the whale skeleton Much to the dismay of the residents of Playa Blanca, a decomposing sperm whale drifted on to the rocks below El Cerro del Huamilule in August 2009. By great fortune, PROFEPA granted us permission to collect what we wanted. (In Mexico, all whales are protected dead or alive.) Not to be daunted by such a task, we gathered whale bones for a period of 6 weeks, at times tying ourselves to trees and fence posts (since yes, the waves did crash over us). We used the usual: chain saws, machetes, ropes and brute force to free the bones from the carcass. Often the impact of the waves aided us by pushing the bones out onto the rocky shore. We carried the bones over the rubble, through the mud (it was the rainy season) and toted them back to El Refugio. (No, they did not smell good. Yes, they were very heavy. Yes, usually it was very hot.) Applause to us, we collected 98% of the skeleton. On the days we could not collect bones, we busied ourselves scraping off the remaining flesh and debris (another charming task!). Gratitude to the gritty people who participated in all this scavenging: my crew and their families and all the rest: Luis, Javier, Jaime, Miguel, Jorge, Marta, Marbe, José Luis, and many others.

Finally, we set the bones in the sun to drain their oil. In time, the sun did its work; too much in fact. S.O.S. to Lee Post, "The Bone Man", who arrived from Alaska to guide us further. Did you know there is a book with sperm whale assembly directions? "The Sperm Whale Engineering Manual"? Thank you Lee!

The mighty force of the sea left some of the bones mangled and marred. We repaired damaged bones and fabricated the few missing bones using our own innovation of surf board blanks (carved and sanded to the correct shape and size) with a covering of polyester resin.

And then there was help. Bows, applause and bravos to the many who generously became Bone Godfathers. Our own program of adopting individual bones to help fund the expenses of restoring, assembling and displaying the enormous skeleton. This task could not have been completed without the munificence of the bone godfathers. We are working on a project to permanently acknowledge you all.

Moving the bones from one place to another became a repeated ritual until we eventually settled on the perfect spot.


With the skull and mandibles finally settled atop steel tubes, Hood River Oregon's, Bob Smith, naval architect extraordinaire, arrived to take us through the machinations of threading giant vertebra on to large pipe, and (no small task), supporting the remaining skeleton. Who knew you were so inventive and persistent Bob!!! (When Bob suggested we bend the 2" diameter pipe to give an interesting shape to the spine, [surely he was joking], the crew rose to the occasion by inserting the pipe through the crotch of a huge mango tree and pushing! Lots of men, lots of pushing, minor damage to the mango tree and voila!!!! A huge pipe with a gentle spinal curve.)

Protection from blasts of both tropical sun and tropical rain became the next imperative. Who wants to work on a whale skeleton beneath this sun? With creative solutions from Zihuatanejo Architect Jorge Espinosa, a roof was added. Happy days for the whale, the visitors and the workers! What a difference a roof makes! Jorge, we bow to you. Great ideas!

And for the final chapter in the skeleton assembly marathon, Lee Post again returned from Alaska. David Evans came from Alberta. Volunteers from Playa Blanca joined in: Daniel, Barbara 2 & 3, Donna, Jim & Carolyn. Matt from Michigan. Brynden and Emily from Hood River. Isain and Dani from Mexico City. A community effort of learning and giving. With directions from Lee and muscle from David and problem solving by all, the final chapter of our whale story was written. And so he stands, majestically posed, tail aloft in a gentle dive, to welcome the school kids, the morbidly curious, the surprised visitor, and all who pass through our doors. Everyone who has visited our whale thanks all of you for your efforts and generosity in making this a real story with a strong ending.

Oh yes, we named him Huamilule, after the promontory that somehow lured him to Barra de Potosí.

A final note, to our own Javier Campos, who in his words, became a man during the collection of the whale. A young man who did not live long enough and did not get to see the rewards of his efforts. He is missed every day.

Javier Campos

Sperm whales are found in all deep oceans from the equator to the edge of the ice pack in the Arctic and Antarctic. Our cachalote died far from here, of unknown causes, and gradually floated in. We would not expect to see a live sperm whale in this region as our waters are not sufficiently deep.

Sperm whales are prodigious feeders and eat about 3% of their body weight per day. Adult males weigh about twice as much as females 50,000 kg vs 25,000 kg. (You do the math! It is a lot of squid, octopus, fish and shark.)




Roseate Spoonbill


Sperm whales live mainly underwater, generally only visiting the surface to breathe. It's the deepest diving mammal that has been documented to reach 1,130 meters in depth, although it is believed they can reach 3,000 meters and stay underwater for up to two hours.

Sperm whales feed almost exclusively on fish and squid from the depths, but their diet can include anything from sea sponges to sharks up to 4 feet long.