#SharkSunday to bring more understanding to humans about sharks! Blacktip Reef Shark remaining within the same local area for up to several years at a time. It is an active predator of small bony fishes, cephalopods, and crustaceans, and has also been known to feed on sea snakes and seabirds. It typically attains a length of 1.6 m The International Union for Conservation of Nature has assessed the C. melanopterus as Near Threatened. When receptive to mating, a female blacktip reef shark swims slowly in a sinusoidal pattern near the bottom with her head pointed down; observations in the wild suggest female sharks release chemical signals that allow males to track them. Once the male finds her, he closes to around 15 cm and follows her with his snout oriented towards her vent. A courting male may also bite the female behind her gills or on her pectoral fins; these mating wounds heal completely after 4–6 weeks. After a period of synchronous swimming, the male pushes the female on her side and positions her so her head is against the bottom and her tail is raised. Once the female is in position, the male inserts one of his claspers into her cloaca. Copulation lasts for several minutes, after which the sharks separate and resume their regular behavior. Off Moorea, individual older females mate and give birth at a consistent time every year, often to within a week’s precision, whereas younger females exhibit more variability in their timing. Younger females are also more likely to fail to become pregnant after mating. The gestation period has been reported as 7–11 months long. Blacktip reef sharks are viviparous, which means they give live birth after the embryos develop in the mother’s uterus. Newborn pups measure 40–50 cm Males and females mature sexually at lengths of 95 cm to 97 cm. Taken by #Underwaterphotographer #DanielSasse #poseidondivecenter #natgeoyourshot #Scubadiving #Aonang #Krabi #instadive #Marinelifeprotection #Ouroceans #Underwaterphotography #natgeo #nature #uwpic #Savetheoceans #Marineconservation #Oceandefender #Saveourseas #underwaterlife #fish #ecowarrior #natgeowild #blueplanet #scubashooter https://www.instagram.com/p/CV9rylWvepl/?utm_medium=tumblr

Cutest smile ever ☺️🦈💙😍💦 . . . Reposted from @rebeccabj_captured Diver: @carlos_estrabeau . . . . . . . . . . . #smilesallday #sharksmile #shark #sharkdiving #bullshark #toocute #underwater #underwaterphotography #ocean #nature #wildlife #mexico #playadelcarmen #sharksunday #scubadivingmag #diving #scuba #dive https://www.instagram.com/p/B_dMm9oBOxp/?igshid=1v6h6f1utmg6a

Say cheese! #sundayfunday #sharksunday #tigerbeach #tigershark #tigerbeachshark #sharkdive #sharklove #amazingplace #savetheocean #sharkweek #sharkdiver #sharkawareness #sharkconservation #sundaychill #scubadiving #savesharks #divebuddy #divelife @ddcanabal @epic_diving_vpc @tigerbeachshark (at Freeport GrandBahama)

Shark Sunday! From last year, beautiful leopard shark taken at #phiphiislands #leopardshark #shark #sharksunday 🇹🇭 (at Amphoe Ko Lanta, Krabi, Thailand)

#SharkSunday this is a juvenile Brownbanded bamboo #shark only 20cm in length. Chiloscyllium punctatum. Nocturnal and can survive 12 hours out of the water. How amazing is that? #scubadiving #underwater #photography by #DanielSasse #wildlife #marinelife (at Poseidon Dive Center) https://www.instagram.com/p/CTtZlQZPQMf/?utm_medium=tumblr

#SharkSunday to bring more understanding to humans about sharks! Blacktip Reef Shark remaining within the same local area for up to several years at a time. It is an active predator of small bony fishes, cephalopods, and crustaceans, and has also been known to feed on sea snakes and seabirds. It typically attains a length of 1.6 m The International Union for Conservation of Nature has assessed the C. melanopterus as Near Threatened. When receptive to mating, a female blacktip reef shark swims slowly in a sinusoidal pattern near the bottom with her head pointed down; observations in the wild suggest female sharks release chemical signals that allow males to track them. Once the male finds her, he closes to around 15 cm and follows her with his snout oriented towards her vent. A courting male may also bite the female behind her gills or on her pectoral fins; these mating wounds heal completely after 4–6 weeks. After a period of synchronous swimming, the male pushes the female on her side and positions her so her head is against the bottom and her tail is raised. Once the female is in position, the male inserts one of his claspers into her cloaca. Copulation lasts for several minutes, after which the sharks separate and resume their regular behavior. Off Moorea, individual older females mate and give birth at a consistent time every year, often to within a week’s precision, whereas younger females exhibit more variability in their timing. Younger females are also more likely to fail to become pregnant after mating. The gestation period has been reported as 7–11 months long. Blacktip reef sharks are viviparous, which means they give live birth after the embryos develop in the mother’s uterus. Newborn pups measure 40–50 cm Males and females mature sexually at lengths of 95 cm to 97 cm. Taken by #Underwaterphotographer #DanielSasse #poseidondivecenter #natgeoyourshot #Scubadiving #Aonang #Krabi #instadive #Marinelifeprotection #Ouroceans #Underwaterphotography #natgeo #nature #uwpic #Savetheoceans #Marineconservation #Oceandefender #Saveourseas #underwaterlife #fish #ecowarrior #natgeowild #blueplanet #scubashooter https://www.instagram.com/sasse.daniel/p/CXqpanSvghI/?utm_medium=tumblr

#sharksunday to bring more understanding to humans about sharks. A close up on the eye of a Brownbanded bamboo #shark and the spiracle which is the hole behind the eye. This Is a first gil slit and used to provide oxygenated blood directly to the eye and brain through a separate blood vessel. Not all sharks have it for example it is absent or reduced in many sharks, especially the fast swimming sharks and is usually larger and present in sedentary or bottom dwelling sharks. In rays, the spiracle is much larger and more developed and is used to actively pump water over the gills to allow the ray to breathe while buried in the sand. Taken by #Underwaterphotographer #DanielSasse #poseidondivecenter #natgeoyourshot #Scubadiving #Aonang #Krabi #instadive #Marinelifeprotection #Ouroceans #Underwaterphotography #natgeo #nature #uwpic #Savetheoceans #Marineconservation #Oceandefender #Saveourseas #underwaterlife #fish #ecowarrior #natgeowild #blueplanet #scubashooter https://www.instagram.com/p/CWPu95Ov7ZI/?utm_medium=tumblr

Another #shark lesson on #SharkSunday Juvenile Brownbanded bamboo shark, (Chiloscyllium punctatum) the most amazing fact about this shark is it can survive out of the water for up to 12 hrs. Concave posterior margined dorsal fin. No color patterns for the adults but the juveniles have dark transverse bands with some dark spots. These sharks are nocturnal animals and Classified as Near Threatened (NT) on the IUCN Red List. Its minimum population doubling is 4.5–14 years range. The major threats to these sharks are the loss of their habitat, pollution, and hunting (both for aquarium trade as well as food). Reproduction is oviparous. Laying eggs. Taken by #Underwaterphotographer #DanielSasse #natgeoyourshot #Scubadiving #Aonang #Krabi #instadive #Marinelifeprotection #Ouroceans #Underwaterphotography #natgeo #nature #uwpic #Savetheoceans #Marineconservation #Oceandefender #Saveourseas #underwaterlife #fish #ecowarrior #natgeowild #blueplanet #scubashooter #Shark (at Poseidon Dive Center) https://www.instagram.com/p/CRLMs9ABoTK/?utm_medium=tumblr