Wildlife

Wild Marine Iguana Cold Ocean Welfare

Marine iguanas of the Galapagos must warm up after cold ocean feeding dives, and El Nino events that reduce food availability cause mass mortality.

Key Facts

Marine iguanas can shrink body length by up to 20% during food shortages
El Nino reduces algae availability, causing starvation-driven size reduction
Body temperature must reach 35-36C before diving is physiologically possible
Galapagos marine iguanas are unique as the only marine lizards

Welfare Considerations

Marine iguana welfare is tightly linked to ocean food availability. During El Nino events, starvation-driven body reduction and mass mortality events represent significant welfare failures at population scale. The physiological stress of repeated starvation-recovery cycles has unknown chronic welfare costs.

What You Can Do

Support Galapagos marine protected area management
Advocate for climate policy that reduces El Nino intensity and frequency
Donate to Galapagos conservation organizations
Follow marine iguana population monitoring research