Dive Pacific 175 Dec2020 Jan 2021

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SPECIESFOCUS Clown toado ~Canthigaster callisterna By Paul Caiger The clown toado or sharp-nosed pufferfish is a species of sub-tropical origin distributed throughout eastern Australia and the southwest Pacific up to New Caledonia. In New Zealand, whilst abundant at the Kermadecs, it is also found in the north, especially in places where the tropical currents reach (that is, islands and headlands). Recent evidence suggests the species is becoming more common at these places, likely as a result of the warming seas around New Zealand. The clown toado is a member of a very diverse genus of pufferfishes, being one of 36 Canthigaster species. It’s brightly coloured, green above and white below, with two dark parallel stripes running along the body and covered in iridescent blue wavy lines and dots throughout. In courting males, the dark stripes fade completely and the blues and greens become more vivid (as depicted in the photograph). Males are territorial and likely to breed with females exclusively within their territory, defending their boundaries against other males. Like other pufferfishes, the clown toado possesses one of the most potent naturally occurring toxins. This neurotoxin called tetradotoxin (named after the pufferfish family) is present in the skin and other tissues of the fish, thus making it unpalatable to predators. Their ability to ‘puff’ or inflate themselves with water, together with their poisonous skin and tissues, explains why these small, slow-moving, colourful fish are often found out in the open sand and rubble environs and not predated upon by large piscivorous predators such as snapper. ~Canthigaster callisterna 1 Also known as a sharp-nosed pufferfish or 6 clown toby. 2 Found in northern New Zealand but also 7 Australia and the SW Pacific. 3 15-20 cm in length. 8 4 One of 36 species in the genus Canthigaster. 5 Males defend territories, primarily for breeding. Males display extravagant colouration during courting. Containing the pufferfish-specific neurotoxin, tetrodotoxin which is highly poisonous if ingested. Like all pufferfishes, will inflate itself with water to become 3-4 times its size when alarmed. 56 Dive New Zealand | Dive Pacific
The Dive Zone group are keen to see divers enjoy their own backyard this summer and looking forward to getting you out on, and under the water in each of their fantastic dive locations: Dive Zone Bay of Islands, Tauranga, and Whitianga. Each of their stores offer awesome service with a full range of dive gear to hire or purchase, with good quality, reliable brands such as Mares and Beuchat leading their range. Be it a new dive knife, a float or flag or even the whole kit; the Dive Zone stores are locked and loaded ready to help you, our summer visitors, enjoy, and get the most out of their diving. All stores also offer tank filling and testing, and BCD and Regulator testing. Three top dive destinations invite you… Since our stores are located in out of the way areas, we are well used to assisting divers with last minute problems that can pop up and prevent you from getting out on the water. Got a friend or family member that wants to learn? Or do you want to upskill? All of our stores offer a full range of PADI dive training courses, and all of them are available throughout the summer. Make the most of our Summer Road Trip offer. Dive with all three stores and go into the draw to win $1000 to spend with us. What are you waiting for? Come and visit us. Dive Zone Bay of Islands Dive Zone Tauranga Dive Zone Whitianga Dive at each of our 3 world class dive destinations, get your Passport stamped and go into the draw to win a $1000 voucher to spend with Dive Zone! Just a Taste of Some of Our Special Spots Bay of Islands – Diving the wrecks of the Rainbow Warrior & Canterbury, Deep Water Cove Marine Reserve or the offshore Cavalli Islands DIVE ZONE ROADTRIP Whitianga – Diving from the Mercury Island group to the Aldermen Islands, Te Whanganui A Hei Marine Reserve (Cathedral Cove) and the stunning eastern Coromandel Coastline Tauranga – Dive the impressive swim throughs at Okaparu, the Astrolabe reef with the wreck of the Rena, or the stunning sheltered bays and marine reserve at Mayor Island. So get on the road this summer and come diving with each of our stores and be in to win! Book your trip and pick up your Passport at one of our stores. Dive Zone Bay of Islands 5 Klinac Lane Waipapa, Kerikeri Ph 09-4079986 Dive Zone Whitianga 10 Campbell Street Whitianga Ph 07-8671580 www.divezone.co.nz Dive Zone Tauranga 213 Cameron Road Tauranga Ph 07-5784050 www.dive-pacific.com 57
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ISSUE 175 - $9.90 inc GST December
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ASB Showgrounds, Greenlane, Aucklan
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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 and 18: Participants spotting sanders wrass
Page 19 and 20: Tiny animals and their critical imp
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: TecFestnz 2021 gears up Michael Gib
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
Page 69 and 70: them even after you’ve switched i
Page 71 and 72: dnz164 More information on Dive Sto
Page 73 and 74: More information on Dive Stores, Cl
Page 75 and 76: Photo: Shades of Colour ddvanced ca
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Dive Pacific 175 Dec2020 Jan 2021

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