Dive Pacific 175 Dec2020 Jan 2021

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SOUNDINGS LOCAL NEWS William Trubridge to go for new deep diving record William Trubridge has announced he will again attempt to break his own world record for freediving in constant weight, free immersion, no fins. ( williamtrubridge.com ) The record attempt will take place at Dean’s Blue Hole during a time window between December 6th - 14th. Freediving strong Participation in Freediving is growing apace, Joy Keene reported at NZUA’s AGM earlier this year. She presented two charts shown here, the second of which shows the breath holding records in New Zealand. William first began serious training for the sport in 2003. In 2005 he was the first freediver to dive at Dean’s Blue Hole, now recognised as the world’s premier freediving venue, and site of the annual Vertical Blue event. There he broke his first world record in the discipline of CNF (Constant Weight No Fins) in April 2007, reaching 81m. Since then he has broken this record multiple times. In 2010 he was first to descend to 100m during Project Hector, an event to highlight the plight of New Zealand’s critically endangered Hector’s and Maui’s Dolphins. William also holds the world record in Free Immersion, with 124m set at Vertical Blue in May 2016. Looking Ahead: National Champs Series - Pool. • Queenstown 27-28 August • Wellington 17-18 October • Auckland/ Northland TBA National Champs - Deoth • March 2021 Pan Pacifics • Auckland 23-31 October 2021 Tauranga U18’s win Underwater Hockey championship October was a big month for New Zealand underwater hockey, with the U18 Interzone Championship and the 2020 New Zealand Interclub Championships. For the first time in 20 years, Tauranga players won the U18’s – the trophy has always been won previously by teams from Auckland or Wellington. The Interclub Championships also saw fierce competition with 33 teams and 350 athletes taking part in 120 matches. The National Rock Lobster Management Group (NRLMG) is seeking feedback on proposed changes to minimum legal size (MLS) of crayfish in the area CRA3 which extends from the North Island’s East Cape, south to the Wairoa River. Currently, commercial fishers there are allowed to catch 52mm male crayfish over the springsummer period whereas recreational fishers have a minimum legal size of 54mm for males year-round. This has long been viewed as inequitable by local recreational fisherman. The NRLMG are currently seeking U18 Interzone Championship Results: 1st Premier Grade – Team Sobek from Crocodylus Underwater Hockey Club (Wellington) 2nd Premier Grade – Team Supernova from Nova Underwater Hockey Club (Auckland) 3rd Premier Grade – Team Furno from Phoenix Underwater Hockey Club (Wellington) Proposed changes to CRA3 minimum legal size crays public support and consultation to put forward to the ministry. NZUA has representation on the NRLMG to provide the recreational interest perspective. If you have a view on this issue contact Andy Stewart at andy@nzua.org.nz 16 Dive New Zealand | Dive Pacific
Tiny animals and their critical importance on entire oceanic food webs By Jean-Michel Cousteau and Holly Lohuis Ocean Futures Society www.oceanfutures.org There is an inner galaxy of alien looking organisms on our own planet. Just night dive in open water with a bright light and witness for yourself the water column coming alive with all different forms of gelatinous plants and animals, referred to as plankton. It is indeed an unknown world to most of us, a world of wandering, drifting plants and animals, which provide the base of the very complex and extremely productive oceanic food web on which we all depend in so many important ways. The word plankton comes from the Greek, planktos, means to wander, or drift. These plants and animals make up a tremendous amount of the biomass in our oceans, yet the significance of how they influence key planetary functions is only being appreciated today as we are documenting major changes in our oceans. While many of these mysterious gelatinous organisms provide important opportunities to study the link between their abundance and the health of our oceans, there are many things we do know about their importance. …Every other breath we take is a gift from the sea… Phyto (plant) plankton Phytoplankton, plant plankton thrive in nutrient rich waters and are generally found in the sunlit waters of aquatic environments. Like terrestrial plants, phytoplankton contain chlorophyll and require sunlight in order to live and grow. Through the process of photosynthesis, phytoplankton take in CO 2 and release oxygen. In fact, as much as 50% of our oxygen comes from phytoplankton. We can think of them as every other breath we take as a gift from the sea. They are one of the world’s most important producers of oxygen and they provide important food for the first order of consumers in the aquatic trophic food web, zooplankton. Plankton participate in the largest migration on the planet which happens under the cover of darkness every single night Zoo (animal) plankton Many zooplankton, or animal plankton, are grazers, filtering the planktonic soup of phytoplankton and other floating organic material. These animals participate in the largest migration on the planet which happens under the cover of darkness every single day. At night trillions of tiny plankton move from the deep scattered layer well over 300m deep towards the surface to feed. Come early morning hours, they then dive down to escape hungry mouths from above. So even though plankton are considered wanders, living a life adrift in the open ocean, they actually make an amazing vertical movement every single day. The richness of our seas is directly related to abundance and diversity of these drifting plants and animals. They not only provide the base of a rich web of life in the oceans, they are even preyed upon by the largest Inset Photo credit: Richard Murphy, PhD @Ocean Futures Society www.dive-pacific.com 17
Page 1 and 2: ISSUE 175 - $9.90 inc GST December
Page 3 and 4: ASB Showgrounds, Greenlane, Aucklan
Page 5 and 6: NEW ZEALAND’S ONLY DIVE MAGAZINE
Page 7 and 8: Big bright future mapped for Dive P
Page 9 and 10: Then on a trip to Melbourne he caug
Page 11 and 12: SOUNDINGS LOCAL NEWS Snapper resear
Page 13 and 14: Our blue economy: Big prospect comp
Page 15 and 16: General Marine comes full circle as
Page 17: Participants spotting sanders wrass
Page 21 and 22: plunging up and down through the wa
Page 23 and 24: whale swimming in the 2021 NZ winte
Page 25 and 26: Photo Credit: Cole Johnston and Sol
Page 27 and 28: Product Number 50120UK © PADI 2006
Page 29 and 30: Diving Fiordland! The great Jacques
Page 31 and 32: Start of Day 1 tions: you have no o
Page 33 and 34: Rare underwater find for NIWA photo
Page 35 and 36: Koura resting on a fallen nikau pal
Page 37 and 38: Kermadec Islands The reason the Ker
Page 39 and 40: Kermadec Islands number of herbivor
Page 41 and 42: Kermadec giant limpets (Patella ker
Page 43 and 44: Story and photos by Sarah Ford perp
Page 45 and 46: Counting fish at the Poor Knights (
Page 47 and 48: dnz164 Counting fish lish populatio
Page 49 and 50: Paolo the fisherman: Making an unde
Page 51 and 52: With an expression of sheer ecstasy
Page 53 and 54: A mean mouthful by Sam Sloss, Italy
Page 55 and 56: C-MAP Reveal released for Australia
Page 57 and 58: TecFestnz 2021 gears up Michael Gib
Page 59 and 60: The Dive Zone group are keen to see
Page 61 and 62: theory may have been tested on peop
Page 63 and 64: these changes is not known, though
Page 65 and 66: How good a dive buddy am I? By Andy
Page 67 and 68: Shark watching in Fiji fast moving
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them even after you’ve switched i
Page 71 and 72:
dnz164 More information on Dive Sto
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More information on Dive Stores, Cl
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Photo: Shades of Colour ddvanced ca
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Dive Pacific 175 Dec2020 Jan 2021

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