Friday, May 20, 2016

Shark

Uhhh,
what is this under me?
A shark?
a young whale shark maybe?.... with company btw..





It's a harmless Nurse shark..

The nurse shark is light yellowish-brown to dark brown, sometimes have small dark spots. It has a flattened body and a broad, rounded head with two conspicuous barbels between the nostrils, which are used to help find food. The mouth is filled with rows of small, serrated teeth for crushing hard-shelled prey.
Generally slow and sluggish, nurse sharks spend much of their time resting on the ocean's bottom. Unlike many sharks, this species is non-migratory—the nurse shark adapts to cold by becoming even less active!
Nurse sharks reach sexual maturity at 18 years for males, and 20 to 22 years for females. Females produce a litter of about 20 to 25 pups every other year.

 (picture from internet)

Did You Know?

The nurse shark can use its large front fins to “walk” along the ocean floor.

Diet

Although they may appear sluggish, nurse sharks slurp up benthic, or bottom-dwelling, organisms in their bellows-like mouths with amazing speed. They feed mostly at night on spiny lobsters and other crustaceans, small stingrays, sea urchins, squid and bony fishes.

Size

Female nurse sharks, averaging 7.5 to 9 feet in length and 165 to 230 pounds, are slightly larger than males.

Range

Common in tropical and subtropical coastal waters on both sides of North America, nurse sharks often inhabit reefs and rest during the day on sandy bottoms or in caves and crevices. They show a strong preference for certain resting sites, repeatedly returning to the same spot after their nocturnal forages.

Predators

No species is known to regularly prey on nurse sharks, although they have been found in the stomach contents of lemon, tiger, bull and great hammerhead sharks.

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Nurse Sharks – a bottom dweller

Description

nurse shark diving bahamas
Nurse shark in the sand
Nurse shark, Ginglymostoma cirratum, from the Ginglymostomatidae family. Its body is yellow-brown to gray-brown, with or without small dark spots and obscure dorsal saddle markings. Mouth is set forward of eyes and is relatively high up on the head – maintaining a more forward position. Noticeable barbells are present, along with nasoral grooves (though there are no perinasal grooves). Spiracles are minute. Dorsal fins are broad and rounded, with the first dorsal being considerably larger than the second. Dorsal fins are set relatively far back along the ventral surface. The upper lobe of the caudal fin is considerably longer than the lower lobe. The caudal fin itself comprises roughly one quarter of the overall body length.
They can get quite large with a length of up to 4.5 meters (15ft) as adults. These large creatures reach weights as high as 150 kilograms (330 pounds). Typically, they live to between 25 and 35 years of age.
Unlike most sharks, which require constant motion to move water over their gills and maintain a sufficient internal blood pressure, the nurse shark often remains motionless along the bottom – actively pumping water over its gills through the continual opening and closing of its mouth.

Location

They prefer warm seas and range through the Atlantic and east Pacific. This species is often found along reef sites, within mangrove channels, and on sand or sea grass flats. They are often observed at depths of a meter or less within the intertidal zone, though they are known to range down to depths of at least 12 meters.

Diving with Nurse sharks

Nurse sharks have long elegant lines, and, since they move sluggishly, you don’t have to worry about scaring them away. Nurse sharks are nocturnal animals, spending the day in large inactive groups of up to 40 individuals. They can be a special sight when encountered in such groups. Nurse sharks are generally considered to be a docile shark species. Virtually every tallied attack has been provoked, so unless one tries to pull its tail, you will have a safe close encounter, should you meet one.

Wednesday, May 18, 2016

Water temp Atlantic.. 15 May 2015 vs 2016

2015 gave no storms or Hurricanes on our side of the Carib..
That was due to ..
Atlantic water under 28C
Shear winds.. tops of potential Storms/Hurricanes was cut of so it could not build bigger
AND everything which was there turned North before it got to us..
etc
2015 May 15th
 2016 May 15th
We see water is warmer then last year...
Time will tell what shit...
btw a few month ago I read somewhere water was colder, due to mixing with colder water of melting N-pole..


How it works?
Over the Sahara there will be a sort of chain belt pooping out the start of depressions regularly and if Atlantic water is over 28C, and if no sand is blown with it from Sahara, and not to humid, and no shearing of the top (That comes from the west (Pacific) and is supported by El Nino) ..

So first few month of hurricane season most chance is shit will go over south of our Carib side, so end of July/Aug I will go south from SXM to avoid that kind of shit when it comes higher..

Theory of course

Tuesday, May 17, 2016

Voile 2016 J122 Liquid


This guy dove down 10m for us EVERY day... 1 I-phone, 2 Swim Ladder 3 Sunglasses, 4 Boathook.. etc






Nico.. NIX..  KWVL













Comanche










A Tack..  Furl it..



Robbie concentrated..  Never saw the Highland Fling..







Shell Beach...
















 And then the wind was finished...


 Swimpower

 Guy did not jump ,,,, in his dinghy



 Back to SXM
 Brunel going back..  19/04..   24/04 Bermuda.. 02/05 Azores..  10/05 Scheveningen