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Updated November 26, 2022

Ghost Fishing for Eleven Millennia
The Heaviest Bony Fish
Looking for a Gift for Your Grand Kid?
The Perils of Veracity in Reporting
If You've Seen This Cute Little Fellow, You Were Too Deep!
Dive Travel Insurance Woes? Let Us Hear from You
PADI Goes to Court
Singing Turtles
$3000-worth of checked-in scuba gear goes missing
This Month in Undercurrent
Undercurrent Tells It Like It Is

Ghost Fishing for Eleven Millennia   November 26, 2022

A diver has discovered the remains of an ancient fish trap, estimated at 11,000 years old, off the coast of Alaska. It was 165 feet deep in water, 44F cold. Imagine how many unfortunate fish it has caught while it's been down there.

Mola alexandrini

The Heaviest Bony Fish   November 26, 2022

Researchers have recorded a 6050-pound bump-head sunfish Mola alexandrini in the Azores, North Atlantic, surpassing the record female (misidentified initially as Mola mola), weighing 5070 pounds caught off the Japanese coast in 1996. While scientists estimate it's about 25 years old, they are uncertain because the lifecycle of sunfish is poorly understood. Just published in The Journal of Fish Biology.

Looking for a Gift for Your Grand Kid?  November 26, 2022

Long-time diver, accomplished dive mystery writer, and part-time Cozumel resident Paul Mila has produced a great little sea turtle book series for little kids. Order right here.

The Perils of Veracity in Reporting   November 26, 2022

Senior Editor John Bantin reflects on the perils he encountered in reporting the truth in diving media. He looks back at how the industry initially reacted against it and why he's now with Undercurrent. It's a new Insider's Blog. You can read it here.

Deep-sea batfish

If You've Seen This Cute Little Fellow, You Were Too Deep!  November 26, 2022

From fish on stilts to creatures of ooze, the strange denizens of the deep uncovered during investigations of two new marine parks 1,500 miles off Australia's west coast were a dream come true for researchers. The new marine park territories will protect 285,000 square miles of ocean around Cocos Keeling and Christmas Islands. Researchers collected a treasure haul of species after sampling habitats with small trawl nets from 200 feet down to a depth of 18,000 feet. You may read more about it here.

Dive Travel Insurance Woes? Let Us Hear from You  November 26, 2022

COVID disrupted dive plans for thousands upon thousands of divers, and many lost lots of money. We're still working on a story about travel insurance for divers, and if you have had any insurance problems, we would like to hear about them. Not just with DAN or DiveAssure, but with any insurance carrier. Let us know how your reimbursement went, good or bad. Please tell us your story. Write to, not forgetting to add your town and state.

PADI Goes to Court   November 26, 2022

PADI will soon be required to testify before a jury in Montana in connection with the death of teenage scuba diver Linnea Mills in November 2020. A judge has overruled PADI's denial of responsibility for the actions of the Gull Dive Center (Missoula, MT) instructors involved in the incident and says the organization must be included as a defendant. PADI is accused of negligence in its oversight of a PADI-affiliated business.

Singing Turtles   November 26, 2022

Scientist Gabriel Jorgewich-Cohen, a Ph.D. student at the University of Zurich, Switzerland, has found that turtles, previously thought to be silent, actually communicate with sound. Jorgewich-Cohen suggests they went unheard because their sounds were hard to detect. Sea turtles will sing from within their eggs to synchronize hatching. They also make noises to indicate they want to mate. Perhaps they're singing "Happy Together."

$3000-worth of checked-in scuba gear goes missing   November 26, 2022

It failed to arrive in Bali in October, nearly ruining the vacation of an Australian diver. It's been an ongoing problem with the Aussie airline Jetstar, which located the bags several days later in Melbourne. Had the diver stuffed an Apple tag in his bag, he could have told Jetstar where it was. See the September issue of Undercurrent for details.

This Month in Undercurrent   November 26, 2022

On the Roatan Aggressor in the Bay Islands, Honduras . . . Stay Away From Those Propellers . . . Fish Can Save Dying Reefs . . . Climate Change Eliminating Florida's Turtles . . . Raja Ampat, St.Lucia, Rangiroa, Vancouver -- Our Readers Tell It Like It Is . . . Undercurrent Has Been Awarded a Grant . . . How to Create Great Videos With That Action Camera . . . Unsafe at Any Depth? Repeat Problems With a BCD Brand . . . Carbon Monoxide is a Killer -- CO Alarms . . . Instructor Killed by Mismatched Tank Threads . . . Have You Seen This Pink Manta? . . . When Your Adrift in the Sea -- Electronic PLBs . . . Aqualung Recalls the Exotec BCD . . . Hydration, Diving, and SIPE . . . Check Your Kit Before a Dive Trip . . . and much, much more.

Undercurrent Tells It Like It Is   November 26, 2022

Unique among diving media, Undercurrent is only answerable to its subscribers because it carries no advertising and has no industry clients to appease. It tells it like it is. Subscribers get 11 issues of the newsletter every year, together with a mid-month update and the Travelin' Diver's Chapbook in December, plus access to more than 10,000 readers' independent reports of resorts and liveaboards, made from their personal experience, on the Undercurrent website. I am offering you a seven-month trial subscription for just $19.95. And I'll send you a FREE download of the 40-page e-books Eight Great Liveaboards (and One Disaster) and Eight Great Dive Resorts (and One Dog). If you want your money back at any time during this period, you'll get it, a promise I've kept since we started publishing in 1975. Click Here.

Ben Davison, editor/publisher


Note: Undercurrent is a registered 501(c) (3) not-for-profit organization donating funds to help preserve coral reefs. Our travel writers never announce their purpose, are unknown to the destination, and receive no complimentary services or compensation from the dive operators or resort.

Highlights of Previous Online Updates*

Here are past Online Update emails sent out . You can sign-up for free to receive these in the future here.


4 May, 2024

20 May, 2024

23 April, 2024

16 March, 2024

16 February, 2024

15 January, 2024

16 December, 2023

28 November, 2023

25 October, 2023

26 September, 2023

18 August, 2023

20 July, 2023

12 June, 2023

27 May, 2023

22 April, 2023

21 March, 2023

21 February, 2023

22 January, 2023

17 December, 2022

26 November, 2022

19 October, 2022

23 September, 2022

15 August, 2022

21 July, 2022

21 June, 2022

16 May, 2022

29 April, 2022

30 March, 2022

25 February, 2022

24 January, 2022


3 December, 2021

27 October, 2021

21 September, 2021

August 18, 2021

28 July, 2021

12 June, 2021

21 May, 2021

26 April, 2021

11 April, 2021

27 March, 2021

12 March, 2021

28 February, 2021

9 February, 2021

31 January, 2021

20 January, 2021

5 January, 2021

20 December, 2020

1 December, 2020

15 November, 2020

1 November, 2020

13 October, 2020

1 October, 2020

21 September, 2020

9 September, 2020

21 August, 2020

8 August, 2020

18 July, 2020

8 July, 2020

25 June, 2020

9 June, 2020

May, 2020

April, 2020

March, 2020

February, 2020

January, 2020

Online Updates* Archive, 2000-2019

* Sometimes referred to as Upwellings

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