Diel vertical migration serves as the anchor for the food web that supplies the entire planet. Every day, 5 billion metric tonnes of organisms migrate to the surface to feed. Predators chase prey, forming a layer of animals so dense that it shows up on sonar equipment as a false bottom. The Deep Scattering Layer.
Part 2 | Seasonal Marine Migrations: https://youtu.be/WN89qh7aXNg
DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub
00:00 – Introduction: Migrations in the Deep Sea
01:04 – Adaptations to the Pelagic Zone
01:30 – Why Marine Animals Migrate
01:46 – How Marine Animals Know when to Migrate
02:29 – Diel Vertical Migration
03:04 – The Role of Zooplankton
03:34 – The Deep Sea Arms Race
04:13 – Sanctuary in the Deep
04:34 – Why Vertical Migrations are Necessary
04:50 – The Role of Phytoplankton
05:21 – The Deep Sea Food Web
06:01 – The Importance of Krill
06:34 – Siphonophores
06:47 – The Great Larvacean Mucus Trap
07:17 – Active Predators of Vertical Migrators
07:46 – The Role of Lanternfish
08:14 – Conclusion: The Importance of the Vertical Migration
08:48 – Preview: Seasonal Marine Migrations
Footage used belongs to Schmidt Ocean Institute, MBARI, NOAA, the Ocean Exploration Institute, as well as various YouTube sources in accordance with the Fair Use policy’s allowance for educational content.
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Music by Jorge Mendez:
– Shelter
– Solitude
– Silver Linings
– Moments
Resources:
https://www.researchgate.net/publication/230996198_Diving_behavior_of_sperm_whales_in_relation_to_behavior_of_a_major_prey_species_the_jumbo_squid_in_the_Gulf_of_California_Mexico
https://www.mbari.org/vertical-migration-predators/