Every night in the open ocean zooplankton migrate toward the surface, away from their deepwater daytime habitat. They are followed by a large and diverse community of fish and invertebrates in what is called “diel vertical migration.” By scuba diving in the open ocean at night, so-called “blackwater divers” are some of the few people on Earth who get to see these weird and wonderful animals up close. “Blackwater diving really speaks to scuba divers that have seen most of what the reefs and wrecks have to offer and want to experience something completely different—a drifting, night dive miles away from shore in an environment where you will never see the bottom,” says Hawaii-based ecologist and underwater photographer Jeff Milisen. “What makes this dive so special is that it is completely unpredictable. With such a variety of animals inhabiting the epipelagic [uppermost] zone, even seasoned blackwater dive leaders frequently see animals and behaviors they have never experienced before. The list of possible encounters is as deep as the ocean.”
This unusual type of scuba diving was started in Hawaii and is practiced in a handful of other locations including Japan, Norway and Russia. Based in Kona on the west coast of Hawaii’s Big Island, Milisen leads dives a few times each week. There, you can get into very deep water after a very short boat ride. “From out there, the city lights from the island seem pretty distant,” Milisen says. “The divers are usually pretty experienced, but even still, the imaginary night monsters running through their heads seem very real. It often takes a few moments for the first brave diver to gather the gumption to suit up and jump in.”
Adafruit is on Mastodon, join in! adafruit.com/mastodon
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — Chip inventories rise as demand falls
Wearables — Go insane with a membrane (button or keypad)
Electronics — Shift away from basic arithmetic
Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 8.0 RC 1 Out, Board Guides, and Much More! #CircuitPython #Python @ThePSF @micropython @Raspberry_Pi
Adafruit IoT Monthly — Cat Doorbell, Deep Algae Bloom Detector, and more!
Microsoft MakeCode — MakeCode Thank You!
EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey
New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 02/01/23 Featuring Adafruit Floppy FeatherWing with 34-Pin IDC Connector!
No comments yet.
Sorry, the comment form is closed at this time.