Dive Pacific Iss 171 Oct- Nov 2019

More documents

Recommendations

Info

GEARBAG Buying gifts for underwater photographers We know it’s hard to know what you can get for that underwater photographer in your life. Not for lack of choice – it’s the opposite – there’s so much! And how do you know what’s good to get and if it will even work with their system? So we’ve written this rule-of-thumb guide to safe gifts. 1. Lenses – The most common thread is M67 (AKA 67mm) – and even if the housing has a different thread, adaptor rings are readily available and affordable. 2. Macro lenses are usually a good choice for any system and most can be stacked to make even higher magnifications – so even if the person who you’re buying for has a macro lens, another one can still be great. i-Torch Video Pro8 - FL-A085 3. Lights – You can never have too much light. Seriously. The brighter the better, but some is better than none. 4. GPS geolocation devices are a great way to show you care about a diver’s wellbeing! Check out the Nautilus Lifeline. Visit https://www.seatech.co.nz/collections/ gifts-for-divers and see some items we’ve picked out. But remember – if you want a hand, give us a call, we’re happy to help! And if you buy during October you’ll get an even better deal than usual in our sale! Inon UCL-165 M67 Close-up Lens Trade enquiries welcome. Ph:09 521 0684 Email: info@seatech.co.nz www.seatech.co.nz WEBSITE DISCOUNTS ON: FANTASEA BIGBLUE INON NAUTILUS LIFELINE October Photo gear sale October 1-31st www.seatech.co.nz Ph: 09 521 0684 info@seatech.co.nz ALL TRADE ENQUIRIES WELCOME. 50 Dive New Zealand | Dive Pacific
SPECIESFOCUS Black angelfish ~Parma alboscapularis By Paul Caiger Black angelfish are a charismatic addition to any northern New Zealand reef scene. As their name suggests, they are black. However they are not an angelfish, but rather belong to the damselfish or demoiselle family more common to the tropics of the world. And unlike their tropical cousins they are far larger, up to 30 cm, as are a handful of other Parma species, and the Garibaldi, found in temperate locations. As juveniles, black angelfish are far more colourful (see photo) and far more like their tropical counterparts; bright yellow with iridescent lightning-blue dots adorning them. Black angelfish are predominantly herbivorous fish and live in fairly shallow depths where sunlight fuels algal growth. Their incisorlike teeth are arranged into cutting plates, perfectly adapted to nip and shear small delicate seaweed with their favoured types being greens and reds. So these fish are usually found in areas devoid of the thicker brown kelps, some of which is their own doing. These fish are avid gardeners, removing undesirable algae and encrusting invertebrates to encourage the growth of their favoured food. Consequently, they are highly territorial, a territoriality that is enhanced during the breeding season when males will aggressively seek out and defend optimum terrain. Such terrain includes not only favoured resources and a lack of large kelp, but also large boulders or rocks that include vertical rock faces which serve as nests. In defense of their territory, and particularly to guard their nests, adult males will chase off intruders, racing at them with a strong “bark”, and flashing a white patch on the top corner of their gill plate. Similarly they will happily target divers too, chasing at any that get too close to their nest, even nipping at stubborn intruders. This ability to vocalise is a trait shared in damselfishes; black angelfish are one of the few very actively vocal species in northern New Zealand reefs. In the tropical species, sound cues emanating from reefs has been shown to provide orientation and settlement cues for larvae looking for a suitable home. It is unknown if this is the case with Parma though certainly very feasible. Black angelfish are an extremely long-lived species; up to 90 years old! This is up there with some the longest lived reef fish anywhere. Remarkably too, they grow to adult size in under two years, a factor that permits them to put energy into maintaining territories and gardens, along with putting huge investments into courting females and protecting their offspring until they hatch. ~Parma alboscapularis 1 2 3 4 “alboscapularis” refers to the white shoulder patch that flares up when excited. Brilliantly coloured yellow and electric blue juveniles. Herbivorous, feeds on red and green algae. Marine gardeners, removing unwanted algae and invertebrates in their garden. 5 6 7 8 One of the most vocally active fish species in New Zealand. Extremely long lifespan, living up to 90 years old. Grow to adult size in under two years. Aggressively defend nests laid on rock faces. www.dive-pacific.com 51
Page 1 and 2: NEW ZEALAND'S DIVE MAGAZINE NEW ZEA
Page 3 and 4: An experience without equal At Waka
Page 5 and 6: NEW ZEALAND’S ONLY DIVE MAGAZINE
Page 7 and 8: INDEPTH EDITORIAL Tuia Encounters 2
Page 9 and 10: Dive boat tragedy kills 34 off Cali
Page 11 and 12: SOUNDINGS LOCAL NEWS Knights. Wade
Page 13 and 14: Diving Fiordland! The great Jacques
Page 15 and 16: myself, Guy Bate and Dave Pearce, w
Page 17 and 18: SOUNDINGS LOCAL NEWS New book on Po
Page 19 and 20: www.dive-pacific.com 17
Page 21 and 22: Winners in the men’s division Pho
Page 23 and 24: Lady with a valiant heart The long,
Page 25 and 26: We had the co-ordinates and we mana
Page 27 and 28: LIVE VOLCANO There’s more to do i
Page 29 and 30: Photo Sam Power Photo Sam Power The
Page 31 and 32: SOUNDINGS INTERNATIONAL NEWS AUT si
Page 33 and 34: New discoveries in the Solomons Tul
Page 35 and 36: A healthy ecosystem and while each
Page 37 and 38: Reef sharks in Tahiti Photo Anthony
Page 39 and 40: Fiji sunset Lionfish hovering just
Page 41 and 42: unprecedented, spurred on by their
Page 43 and 44: Sleeping like a Weddell by Ralf Sch
Page 45 and 46: If penguins could fly, by Eduardo D
Page 47 and 48: BACK IN THE DAY DIVE Magazine Vol 7
Page 49 and 50: GEARBAG LET’S EXPLORE. TOGETHER.
Page 51: Washing your dive gear made easy Sa
Page 55 and 56: Treatment Once in Singapore the div
Page 57 and 58: Fig. 1 Advantageous counter-diffusi
Page 59 and 60: N E W Z E A L A N D ’ S O N L Y D
Page 61 and 62: Advanced Highly Commended: Congratu
Page 63 and 64: A selection of notable photos enter
Page 65 and 66: Let’s first look at the five butt
Page 67 and 68: AF-ON button to its cameras. Now, a
Page 69 and 70: define sensitivity: the higher the
Page 71 and 72: dnz164 More information on Dive Sto
Page 73 and 74: More information on Dive Stores, Cl
Page 75 and 76: Dive Business For Sale - PADI 5 Sta

Dive Pacific Iss 171 Oct- Nov 2019

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?