Tawatha T. Elguero

Scientific illustration and visual communication.

Vaquita Marina

16 Feb, 2022 · Conservation
Vaquita Marina
Vaquita marina social media infographic - 2022. Tawatha T. Elguero

IUCN Red List status: Critically Endangered (CR).

I began this project in 2022 as an ongoing collaboration with Julia Rouaux, PhD in Natural Sciences and scientific illustrator, who has supervised me throughout the process to help ensure the accuracy of the data and information used in this project.

The vaquita marina (Phocoena sinus) is the world’s smallest porpoise and one of the most endangered marine mammals on Earth. Its range is limited to the Upper Gulf of California, Mexico. Only a handful of individuals remain, with 2025 monitoring efforts estimating approximately 7–10 vaquitas observed.

Digital scientific illustration of a vaquita marina (Phocoena sinus) mother and calf swimming together, showing differences in body size and the species’ grey-white colour pattern.
Illustration of a vaquita marina (Phocoena sinus) mother and calf - 2022. Tawatha T. Elguero

The main threat to the species is bycatch in illegal gillnets set for totoaba, an endangered fish whose swim bladder is highly prized on international black markets. Despite the severity of the decline, conservation efforts continue to protect the remaining animals and support the possibility of population recovery.

Distribution map of the vaquita marina (Phocoena sinus) in the Upper Gulf of California, Mexico, based on iNaturalist observations.
Vaquita Marina distribution map based on iNaturalist observations. iNaturalist

Illustration Process

The project is currently in progress. So far, I have focused on reconstructing the skull and developing preliminary infographics to communicate the species’ anatomy and conservation status. There is still a lot of work ahead and the development of additional educational material.

The research process has been challenging because the remaining population is minimal, and skeletal material is scarce. Only a limited number of specimens are available through museums, archives, or private collections.

Because some cranial elements were missing from the available references, including the teeth and zygomatic arch, we sent a formal request to the vertebrate collection in Mexico for additional specimen photographs.

Photograph of biologist Dr. Sandra Martínez holding a vaquita marina skull specimen in the mammal collection in Mexico for scientific illustration reference.
Reference photographs by Dr. Sandra Martínez, taken at the Vertebrate Collection, Mexico. Private collection - 2022.

Dr. Sandra Martínez gathered the necessary photographic material, which allowed me to complete the skull reconstruction.

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Close-up of a Vaquita skull study in pencil, showing tonal development - 2022. Tawatha T. Elguero

Process photograph of a digital vaquita marina skull illustration in Photoshop, shown alongside specimen reference photographs during anatomical reconstruction.
Process view of a Vaquita skull illustration in development, showing digital rendering in PS alongside specimen reference - 2022. Tawatha T. Elguero
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A mixed-media skull study combining trad-pencil drawing with digital refinement in PS. Tawatha T. Elguero

And here is the final-rendered skull:

Final rendered scientific illustration of a vaquita marina (Phocoena sinus) skull in lateral view, showing the long rostrum, teeth, eye socket, and cranial structure.
Final rendered skull of a vaquita marina (Phocoena sinus). Mixed media — scientific illustration by Tawatha T. Elguero, 2022.

Special thanks to The Vertebrate Collection of the Natural History Museum of Mexico and to Dr. Sandra Martínez for their generous support and for providing the photographic reference material that made this part of the reconstruction possible.


[In progress.]

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