Main Menu
Join Undercurrent on Facebook

The Private, Exclusive Guide for Serious Divers Since 1975 | |
For Divers since 1975
The Private, Exclusive Guide for Serious Divers Since 1975
"Best of the Web: scuba tips no other
source dares to publish" -- Forbes

Current Online Updates*
The Latest Dive News  Subscribe to RSS Feed for Undercurrent Dive News What's this?

Updated April 11, 2021
These brief news articles below were sent out via email to all divers who signed up for our free email list.
You can sign up here to receive future Undercurrent Online Updates and get news alerts and special offers like these every month.

Octopuses Feel Both Physical and Emotional Pain
Something for World War II Buffs
The List of Countries Divers Can Visit Grows
Not So Giant Monsters of the Night
The Caymans are Recruiting Divers to Fight Stony Coral Disease
A Lonely Protest on Behalf of Sea Grass
The Myth of Sustainable Fishing as it Destroys Our Oceans
Maldives Sharks Trouble?
Don’t Be Tempted to Take a Pet Home!
Breathless Record-Breaking!
Coronavirus Errand of Mercy
Will Those Pacific Islands Survive without Tourism?
Living Life on the Edge
Are You Really Ready to Go Diving?
The Deepest Wreck Dive in History


Octopuses Feel Both Physical and Emotional Pain  April 11, 2021

We all know how an octopus is a master of disguise and usually darkens in color when it becomes defensive or irritated by a diver. A new study by neurobiologist Robyn Crook (San Francisco State University) suggests octopuses are likely to feel and respond in way similar way to mammals. Octopuses are the most neurologically complex invertebrates. Using detailed measurements of spontaneous pain-associated behaviors and neural activity, Crook found evidence that the octopuses can feel negative emotions at times. So, kind divers, don’t go about upsetting them.

Something for World War II Buffs  April 11, 2021

As far as WW2 wreckage is concerned, the Mediterranean is a treasure trove. Greece’s Ministry of Culture & Sport has just announced the opening of 91 listed ship and aircraft wrecks to recreational divers, with more on the way. The majority are deeper than 100-feet, with a preponderance of German JU88 bombers among British and Italian warplanes.

The List of Countries Divers Can Visit Grows  April 11, 2021

Besides Mexico and many Caribbean countries, Ecuador (and the Galapagos) is now open to those that can prove they have been vaccinated against COVID-19 and can present a PCR test or antigen test completed within three days of arrival. Belize accepts vaccinated travelers or those who can present a negative PCR test taken with less than 96 hours before arrival or a negative rapid antigen test made within 48 hours before arrival. In Saba, more than 85 per cent of the adult population has been vaccinated. Starting May 1, the island will welcome vaccinated tourists; non-vaccinated persons will still require 5-days quarantine. The Seychelles are welcoming vaccinated visitors, and divers ready to face colder water are accepted in Iceland. They will not be tested or quarantined if they can prove they are fully vaccinated. Coming home, however, may be complicated. As of now, the CDC requires all airline passengers headed to the U.S. to show proof of a negative Coronavirus test or recovery from COVID-19 before boarding a flight; airlines are required to deny boarding to those who don’t comply. And once arrived in the U.S., you should have a follow-up test 3-5 days after return, whether or not vaccinated.

larval fish

Not So Giant Monsters of the Night  April 11, 2021

Thanks to the super-macro lenses now available to underwater photographers, the daily movement of larval fish and invertebrates from the depths to the surface each evening (one of the largest migrations of organisms on the planet) can now be captured by camera. It’s given rise to black-water photography. Most of the larvae are no bigger than a fingernail; others are even smaller. And they can easily be mistaken for bits of seaweed or drifting detritus. More and more photographers have captured stunning images and videos that reveal a secret world of bizarre, tiny animals that scientists have struggled for decades to better understand. Nowadays most underwater photography contests have a black-water category. Click here to view the article.

The Caymans are Recruiting Divers to Fight Stony Coral Disease  April 11, 2021

Impacting over 20 species of reef-building corals in local waters, stony coral disease seriously affected many Cayman reefs. To tackle the problem, the Department of Environment is contracting with qualified divers to apply topical antibiotics and remove infected corals. Pay is $90 US for 7.5 hour a day. Preference will be given to local divers. People with an academic and practical marine sciences background and the ability to identify coral species are also encouraged to apply. Email by 17 April.

A Lonely Protest on Behalf of Sea Grass by Shaama Sandooyea

A Lonely Protest on Behalf of Sea Grass  April 11, 2021

Thousands of marine species rely on sea grass for both food and habitat, but the world is losing seven per cent each year due to dredging, rising ocean temperatures, and other factors. Mauritian marine scientist, 24-year-old Shaama Sandooyea, donned a snorkel and dived below the waves to protest above the world’s largest seagrass meadow in a remote stretch of the western Indian Ocean. The campaign draws attention to a U.N. goal of persuading countries to protect at least 30 per cent of the planet’s land and ocean by 2030. Eel Grass can also reduce seawater’s acidity to preindustrial levels, creating refuges for animals that can’t tolerate that byproduct of climate change. Reuters/San Francisco Chronicle

The Myth of Sustainable Fishing as it Destroys Our Oceans   April 11, 2021

In his latest production Seaspiracy, 27-year-old British filmmaker Ali Tabrizi calls out the commercial fishing industry for plundering the oceans and indicts the myth of sustainable fishing. Since its release, the film has climbed to the top ten in Netflix documentaries. With interviews with famed biologist Sylvia Earle, and with each new scene, Tabrizi reveals the fraud, corruption, and greed currently destroying the oceans. As Sea Shepherd’s Paul Watson says, we’re strip-mining the sea. It’s a depressing story that needs to be told, but no industrialized fishing is ecologically sustainable. EcoWatch

Whale shark in Maldives

Maldives Sharks Trouble?  April 11, 2021

In 1998, rising sea temperatures destroyed the spectacular coral banks of the atolls and many feared it was the end of the scuba industry in the Maldives. However, divers refocused their interest on the sharks and mantas that frequented the current-producing tidal areas of the channels or kandus, and a robust liveaboard dive industry developed. Now, despite denials from some interested parties, it has been reported in the Maldives Times, Minister of Fisheries, Marine Resources and Agriculture, Zaha Waheed, has said lifting the ban ‘presents a profitable revenue-generation strategy for the state.’ After an 11-year ban on the activity, other officials are looking to resume commercial shark fishing. This has resulted in international condemnation and an increasing backlash from some stalwart members of the dive community who are threatening to boycott the country once Coronavirus lockdown is lifted. State your opposition by signing this petition started by a Maldives citizen.

Don’t Be Tempted to Take a Pet Home!  April 11, 2021

During a regular x-ray inspection of luggage being loaded on a Baltra airport flight in the Galapagos on March 28, authorities discovered 185 recently hatched giant tortoises. Not more than 3 months old, they may have been stolen from one of three giant-tortoise breeding centers in the islands. An investigation has begun. Galapagos National Park

Breathless Record-Breaking!  April 11, 2021

Croatian Budimir Buda Šobat, 54, recently held his breath underwater for 24 minutes 33 seconds to break his own in the Guinness Book of Records. The former body-builder, has who became one of the world’s top ten breath-holders, did it in a swimming pool in the town of Sisak, while under supervision from doctors. His training has prepared him for involuntary muscle spasms that occur around 18 minutes beneath the water due to a lack of oxygen. Šobat's record breaking attempt was also performed in the hope of raising funds for disabled children. Daily Mail

Coronavirus Errand of Mercy  April 11, 2021

While Truk Lagoon has been closed to visitors, MV.Odyssey, the luxurious diving liveaboard, is being put to good use, providing accommodation and logistical support for local medical personnel administering COVID vaccinations to residents living on remote islands in the atoll. The team not only vaccinate for Coronavirus but also administer MMR vaccines to children. The medical team stays on board for five days per trip, while setting up temporary clinics onboard. It’s expected to take three months to reach all the islands.

Will Those Pacific Islands Survive without Tourism?  April 11, 2021

After a year of COVID restrictions, many favorite resorts in the Pacific are in danger of economic devastation. While many Pacific islands managed to stay completely COVID-free, they’ve suffered from algae-filled pools and shuttered hotel windows as a sign of their government’s decisions to close their borders. Fiji alone employed more than 150,000 in the tourism sector, providing around half of its gross domestic product. Mass unemployment also stalks the people Vanuatu, the Cook Islands, Rarotonga and other island nations. The government’s rescue packages were funded through now-depleted cash reserves and borrowings from development banks. Their future looks bleak. The Guardian

Blue-ring octopus

Living Life on the Edge  April 11, 2021

A thousand times more potent than cyanide; that’s the venom of a blue-ring octopus. This tiny creature is armed with enough poison to kill more than 20 people. However, a Virginia woman, Kaylin Phillips, visiting Bali in March, didn’t know that when she picked up one of these cute little creatures, passed it around between her friends, and posted video of it on TikTok. Biologist Forrest Galante said, if she’d been bitten, she’d have been dead within minutes, thanks to its neuro-toxic venom that will shut down your breathing. Amazingly, she, and her unknowing friends got away with it. Inside Edition

Are You Really Ready to Go Diving?  April 11, 2021

Don’t be so sure. If you’ve been out of the water a year or more, your skills have degraded, and Dan Orr says you need to give some serious thought about just how you get back into diving. Read this important piece here.

The Deepest Wreck Dive in History  April 11, 2021

A crewed submersible, manned by U.S. exploration team, has reached the four-mile-deep (21,320-feet deep) wreck of the USS. Johnston, a 378-footlong destroyer, sunk during the Philippines’ Battle of Leyte in 1944. It’s the deepest shipwreck dive in history. The destroyer was sunk by fire from the largest warship ever constructed -- the Japanese battleship Yamato. The Caladan Oceanic-backed expedition found the bow, bridge and mid-section intact, with the hull number 557 still visible. The Guardian

Stay Safe
Wear a Mask, Socially Distance, Wash Your Hands
Get Vaccinated
Don’t Share Your Air

Ben Davison, editor/publisher

Covid 19 prevention protocol


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.


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

Find in  

| Home | Online Members Area | My Account | Login | Join |
| Travel Index | Dive Resort & Liveaboard Reviews | Featured Reports | Recent Issues | Back Issues |
| Dive Gear Index | Health/Safety Index | Environment & Misc. Index | Seasonal Planner | Blogs | Free Articles | Book Picks | News |
| Special Offers | RSS | FAQ | About Us | Contact Us | Links |

Copyright © 1996-2024 Undercurrent (
3020 Bridgeway, Ste 102, Sausalito, Ca 94965
All rights reserved.