Vaquita – Last Chance for the Desert Porpoise

Teachers Guide – Extinction

Extinction – A Comparative Study. Grades 9 – 12.

Teachers Guide – Extinction

Documentary Overview

“Vaquita -The Search for the Desert Porpoise” is an online documentary series based on the field experiences of documentary filmmaker and photographer Chris Johnson.

Over two years (2008-2009) Chris journeyed to the northern Gulf of California, Mexico. His purpose was to search for and document the most endangered marine mammal on the planet, while giving a voice to those involved in vaquita conservation, and the locals whose livelihood depends on the fishery that is killing the desert porpoise.

With black ringed eyes and a black-lipped smile, vaquita (Phocoena sinus) is the smallest of all cetaceans (whales, dolphins and porpoises). Only an estimated 200 animals remain in a small, isolated pocket of the Sea of Cortez where their numbers continue to decline due to entanglements in gill nets set by local fishermen to catch shrimp.

With the major threat to the vaquita’s survival identified, the solution seems obvious – simply remove the entangling nets. Unfortunately, if this were done, the implications for local communities, whose livelihoods depend on the shrimp fishery, would be significant. The challenge lies in finding an amicable and cooperative solution that allows porpoises and fishermen to live together and thrive, and to find it in time.

The Program –

  • Visits the northern Gulf of California, Mexico and the home of the critically endangered vaquita porpoise.
  • Introduces the viewer to the vaquita porpoise in its natural habitat through rarely seen video footage and imagery.
  • Takes the viewer onboard both local and international scientific research vessels, inside international conservation meetings and into local communities.
  • Explores the impact of the gillnet fishery on the vaquita’s ability to survive.
  • Introduces multiple perspectives on the effects, and potential success of vaquita conservation measures.
  • Reveals the purpose behind the Mexican government’s multi-million dollar fisheries buyout scheme.
  • Explains the complexities involved in vaquita conservation efforts, and explores how these plans will impact local communities who depend on the shrimp gillnet fishery for a living.
  • Discovers scientific techniques being used to assess the vaquita population and monitor its ongoing health.
  • Explores the issue of extinction and what it means if we lose this species
  • Expresses the need for cooperation and community support for management and enforcement to be effective, and questions if this is happening.

Viewing Ideas –

Before Viewing:

  1. Explain that whales, dolphins and porpoises belong to the order cetacea, which includes 86 species. Amazingly, this number is still fluctuating as new species are still being discovered. Talk with students about cetaceans and how they come in a range of shapes, sizes and colors, they inhabit oceans, seas and river systems, and are spread across the globe. Each species is perfectly adapted to its aquatic environment. Discuss how porpoises are different from whales and dolphins. Look at a map of the world and help students identify the range and habitat of the vaquita porpoise. Look at the same map and identify the habitat and range of all five porpoise species.
  2. Divide students into pairs or small groups. Advise them to go online to www.vaquita.tv and read selected sections and watch selected videos from Vaquita – “The Search for the Desert Porpoise”. (Students can be directed to view any, or all videos depending on time frame and depth of focus.)
  3. Advise students to consider the following questions:

    • Where is the vaquita found, and why is it on the verge of extinction?
    • What distinguishes vaquita from other cetaceans?
    • What are scientists finding out that may help save the species?
    • What are governments doing to try and save vaquita?
    • What are the positives and negatives of the fisheries buyout scheme?
    • Can an agreement be reached that benefits all stakeholders?
    • How important is it to include and take care of local communities when a species is on the brink of extinction?
    • What lessons can be learned for the future of marine conservation in Mexico, and for similar issues worldwide?

After Viewing:

  1. Begin by giving students five minutes to compare and discuss their views among the group. Give students a brief overview of the recent extinction of the baiji (Yangtze River Dolphin).
  2. Class discussion. Ask students how they feel about extinction.
    • What does it mean to them personally, and how does it detract from the richness of our planet?
    • How do human values play a role in extinction?
    • Should we care about an animal that most of us have never heard of, let alone seen?
    • The vaquita is the unintended bycatch of fishers simply trying to feed their families and make a living. Are they at fault?
    • How do we value the survival of a species versus the livelihood of local communities?
    • Should fishers be forced to change jobs, and should they be offered viable alternatives?
    • How can we address the growing problem of fisheries/cetacean interactions across the world’s oceans as human populations increase, and the demand for seafood continues to grow?
    • Does creating laws do enough to protect endangered species? What else is needed?
    • Should the consumer bear some responsibility for creating the demand for fisheries that kill non-target marine species?

Classroom Activity –

Objective:
Utilize information obtained from the website www.vaquita.tv’, from class discussion and from research into the extinction of the baiji (Yangtze River dolphin). Create a comparison chart/poster to address the following critical question – ‘The baiji is extinct, will vaquita follow? Students can work in pairs or small groups.

Materials:

Procedure:

  • Understanding cetaceans and their habitat helps scientists and policy makers organize research and conservation programs. Sometimes conservation efforts conflict with livelihoods, job security and the economic pursuits of governments. In this activity students are to undertake a comparative study between two species, one is recently extinct, the other on the verge of extinction.
  • Depending on access to computers, organize students into groups.
  • Have students search online at www.vaquita.tv and www.baiji.org for information about the baiji and the vaquita.
  • Instruct students to thoroughly research and create a single list of all the factors that contributed, and in the case of the vaquita, are still contributing to their demise. Depending on the group, you may want to give them some hints: (Ship traffic, Collisions, noise pollution, chemical pollution, human population nearby, entanglement in fishing gear.)
  • Students are to also identify protection measures put in place for both species, as well as science, education and investment efforts in conservation.
  • From their list, students are to identify the threats attributed to each species individually, and then identify the threats they have in common.
  • By comparing the threats to both species, students are to determine the lessons learned from the loss of the baiji, and how such lessons may be used to help save the vaquita.
  • Students will analyze lessons learned from the loss of the biaji, and how they could be utilized to save the vaquita.
  • Students are to present their chart/poster to the group.
  • Possible points to highlight, discuss and reinforce at the end of activity include –
    • Learning from our failure
    • Laws alone are insufficient
    • Enforcement is critical
    • Prioritize threats, then act
    • Education – If people don’t know, they cannot care
    • Extinction can happen quickly
    • People are both the problem and the solution

(NOTE: If possible, a guest speaker from the field of ocean/cetacean research will give students further insight and access to this field of science and conservation)

Activity Answer:
Students use what they learned about the vaquita in Mexico as a catalyst for a comparative study between two species related to the issue of extinction. Students see the connectedness between species survival and human induced pressures. They will explore our responsibilities to other life on this planet, and the role of human values.

This activity gives students a real worldview of extinction, its causes, its implications and most importantly, what can be done to prevent it. It challenges students to explore their own values in regard to the natural world, and to question how human population growth is shaping life on this planet. They will also assess the relevance of science and conservation and consider its applications closer to home?

Classroom Application:
The ‘Expedition Vaquita’ activity program can be directed and adapted to a range of year levels from Grades 9-12 science, environmental education, political science, and ICT subject areas. Lateral thinking allows activities encompassing whales, dolphins and porpoises collectively called cetaceans, to link into a wide range of secondary curriculum areas. An awareness of other animals, particularly the study of charismatic keynote species, is crucial for students to learn about the issues involved in conservation and how the choices we make affect the world around us. Learning about the lives of other animals changes our ‘world view’, fosters a sense of responsibility and encourages action. The topic of cetaceans fits most obviously into the science learning area. However, there is ample opportunity to incorporate cetaceans into the geography, English and art frameworks.

Classroom Activity Author
Genevieve Johnson has taught High school and middle school students in the area of Environmental Education for over 12 years. She has a masters degree in Science Communication, and spent five years as a cetacean field researcher on an around the world science and education expedition. As well as teaching in a classroom, Genevieve has written and delivered multiple programs related to marine life and sustainability, designing curriculum and linking education programs with students around the globe.

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