Underwater time lapse recording of sea urchins - Chile

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Uploaded by on Aug 9, 2011

4 hrs of underwater time lapse recording of three sea urchin species are documented in one minute. The species are: Arbacia dufresnii (rare on the sequence), Loxechinus albus (two individuals in the center of the image sequence) and Pseudoechinus magellanicus (small, abundanrt and very active).
Images were taken in 20 sec intervals in about 8m depth (Caleta la Arena, Seno de Reloncavi, Chile) in Austral winter (july 2011)

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