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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Pelagic zone | 3/3 | https://en.wikipedia.org/wiki/Pelagic_zone | reference | science, encyclopedia | 2026-05-05T07:36:06.087361+00:00 | kb-cron |
Remotely operated vehicles (ROVs) are used for sampling and examining the deep pelagic sea in ways that other techniques cannot match. An ROV is an unoccupied machine equipped with lights, cameras, sensors, or arms, which allows for detailed and live observations of its surroundings and of pelagic organisms. It can conduct experiments and collect samples. These machine are limited in ground coverage, as well as expensive and hard to control, so few research groups use them. They can also be loud, bright, and big, causing organisms to avoid them.
=== Additional methods === Some other sampling and observation methods are: predator gut examinations, analysis of environmental DNA, organisms that get washed up on shore from upwelling, analyzing sediments cores, and pelagic longline fishing.
== References ==
== Further reading == Ryan, Paddy "Deep-sea creatures" Te Ara – the Encyclopedia of New Zealand, updated 21 September 2007 "Pelagic-zone (oceanography)" Encyclopædia Britannica Online. 21 March 2009. Grantham HS, Game ET, Lombard AT, et al. (2011) "Accommodating Dynamic Oceanographic Processes and Pelagic Biodiversity in Marine Conservation Planning" PLOS One 6(2): e16552. doi:10.1371/journal.pone.0016552. Wrobel, David; Mills, Claudia (2003) [1998]. Pacific Coast Pelagic Invertebrates: A Guide to the Common Gelatinous Animals. Sea Challengers and Monterey Bay Aquarium. ISBN 0-930118-23-5.