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Updated March 30, 2022

The Cold North Atlantic Continues Warming
Buying Lettuce for Manatees
Great Bali News for Traveling Divers
Bad News from the Great Barrier Reef
Avoiding Accidents with Passing Boats
In Eight Days, Three People Die Diving Florida
You Never Know What's Under There
This July, Scientists Want You to Look for Sharks
This Month in Undercurrent
Why You Should Subscribe to Undercurrent

The Cold North Atlantic Continues Warming   March 30, 2022

So much in fact that the carcass of a Greenland shark, a species that lives in frigid Arctic waters, was discovered off the warmest part of Britain's coast. In mid-March, a member of the Cornwall Wildlife Trust found the carcass on a beach at Newlyn Harbour, near Penzance, before the rising tide washed it back out to sea. However, the crew of a tourist vessel saw it and took it in tow, returning it to land so that it could be examined. Of course, one could argue that the waters were colder than usual, but as the Arctic Ocean warms. Arctic dwellers are no longer limited to their normal territory.

Manatess eating lettuce

Buying Lettuce for Manatees  March 30, 2022

More than 55 tons of lettuce have been fed successfully to starving manatees this winter because their natural food -- more than 60 species of marine plants -- in Florida's coastal inland waters is being destroyed by water pollution. More than 1,100 manatees died from starvation last year. About 7500 remain. Individual donations are funding the cost of the lettuce, and you can add to this fund here. AP News

Great Bali News for Traveling Divers  March 30, 2022

Indonesian authorities are eliminating COVID-19 quarantine restrictions for Bali and issuing visas-on-arrival nationwide starting April 1. Presently those arriving in Bali can get a VOA if from one of 42 countries, including the U.S., Canada, the UK, and EU member nations. A PCR test on arrival is required. Click here to view the article.

Bad News from the Great Barrier Reef  March 30, 2022

The sixth mass coral bleaching even since 1998 is underway, says scientist Prof. Terry Hughes of James Cook University. Data from monitoring flights operating along all 1,430 miles of the world heritage site have found that 60 percent of the hard corals show bleaching. Scientists began to worry back in December after water temperature levels rose to record levels up to 7°F higher than normal. The Guardian

Avoiding Accidents with Passing Boats  March 30, 2022

At the end of a dive, wise divers send up a large inflated surface marker buoy, which they have on a line fed from a reel or spool. The recent sad incident in Mexico that resulted in the deaths of two experienced American divers who were run over by another dive boat as they were surfacing reminds us that every diver should be so equipped and well-practiced at deploying one.

In Eight Days, Three People Die Diving Florida  March 30, 2022

As the weather warms, the casualties mount up. On March 9, Jon Lassus, 61 (Fort Wayne, IN), diving Molasses Reef off Key Largo with Rainbow Reef Dive Center, had not gone underwater yet when he started to struggle and lost consciousness. The next day, local woman Karen Ruth Zaslow, 69, died after snorkeling from the charter boat Floridays off Sand Key, near Key West. On March 17, Chief of Medicine at South Shore Health (Weymouth, MA) Robert K. McIntyre failed to surface after a dive. McIntyre was on a diving trip arranged by the Jupiter Dive Center when the dive boat captain notified the Coast Guard that the doctor had not surfaced from the Lake Worth lagoon. Take care out there.

You Never Know What's Under There   March 30, 2022

Just six feet deep and close to a popular beach of the Spanish Mediterranean island of Mallorca, local divers discovered a well-preserved 3rd or 4thCentury Roman wreck loaded with more than 300 amphorae, many still with their painted inscriptions. Undisturbed for around 1,700 years, local divers repeatedly told the authorities something was there to be discovered. Now there is 24-hour police surveillance to allow maritime archaeologists to do their work.

Shark snapshot

This July, Scientists Want You to Look for Sharks  March 30, 2022

The Shark Trust is asking divers and snorkelers worldwide to join their Great Shark Snapshot and record every shark, ray, and skate spotted between July 24 and July 31. That information will be added to the Shark Trust's Shark Log, allowing shark scientists to build a picture of species distribution and any changes that occur. If possible, take photos or videos, but at least write down what you spotted. Go to the website to get more information and register.

This Month in Undercurrent  March 30, 2022

A photo-course on Grand Cayman … Inept buoyancy control by photographers … the Caribbean, Hawaii, the Galapagos, and Florida -- our subscribers are traveling again … protection for Florida's goliath grouper lost … various country COVID entry rules … Great whites mating off the Carolinas? … Is this the end of the BCD? … Weed a reef like you'd weed a garden …Yucatan cenotes in danger of destruction … the lionfish's fear of being eaten … Cancun boats propellers kill two … and much, much more.

Why You Should Subscribe to Undercurrent  March 30, 2022

The pandemic has undoubtedly changed things, but the Independent Reader Reports available online to Undercurrent subscribers are a unique resource. More than 300 reports have been submitted regarding diving, dive centers, and dive locations in 2021 and 2022, and nowhere else can you find such honest and unedited appraisals not driven by advertising. You can access these reports and thousands of others by subscribing to Undercurrent.

In addition, each month, our 16-page newsletter will keep you up to date on the safe spots to travel and where you should avoid traveling, with stories by our undercover writers who pay their way. Get the latest on the Keys, Belize, Indonesia, Bonaire, Hawaii; as the world opens again to diving, Undercurrent will be there. And we have unique features on safety -- like that bent diver who ignored her computer and listened to her guide, equipment, and much, much more.

For two more days, I am offering you a seven-month trial subscription for just $19.95. You'll have complete access to 20 years of issues and reader reports on our website. And I'll send you FREE downloads of Eight Great Liveaboards and Eight Great Dive Resorts. If at any time during this period you want your money back, you'll get it, a promise I've kept since 1975. Click here.

Get fully vaccinated
Wear a mask when appropriate
Stay Safe

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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