The Self Contained Underwater Breathing Apparatus (SCUBA), is a research tool that enables scientific diving underwater to retrieve samples or conduct field observation of gelatinous grazers and related predator-prey relationships. The apparatus allows a single diver to operate autonomously and in situ without the need for support from the surface and gives mobility in underwater environments.

 

SCUBA diving in blue water is used to efficiently observe and collect gelatinous grazers in their underwater habitat to further determine predator-prey relationships, DNA, cellular characteristics, and ecosystem viability. SCUBA based sampling allows researchers to observe and experiment with fragile gelatinous animals in their respective environments. Net-based capture of gelatinous animals can mangle specimens beyond identification and introduce microbial contaminants into the study. With SCUBA, experiments can be performed with the feeding of these animals in their natural prey fields without the harmful effects of air exposure or nets. 

 

In Situ Sampling 

In Situ is a Latin phrase that translates to “on-site” or “locally” and refers to the process of observing and sampling gelatinous grazers in their local environment. This means gelatinous grazers are not observed nor sampled under controlled conditions, but rather the variables that exist in an ocean ecosystem where they are present. With a SCUBA research tool and methodology, it is possible to observe and collect gelatinous grazers as they are in the environment.

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Underwater sampling

Image courtesy of Gitai Yahel

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