Lowtide Manta rays have been known to leap


out of water, sometimes landing in or on small boats and damaging or wrecking them.


The manta ray has been known to


produce an embryo measuring four feet wide and weighing 28 pounds.


The word manta is Spanish for cloak


or blanket, and when swimming they resemble a spread-out blanket.


The blue whale, basking shark and


whale shark feed in the same way as a manta ray.


The “head” of an octopus is called a


mantle. The mantle holds the octopus’s organs: heart, stomach, brain and kidneys.


The blood of an octopus is blue. An octopus can change colors


using special pigment cells called chromatophores.


MARITIME TRIVIA BY BRYAN HENRY Each of an octopus’s eight arms is


lined with two rows of suction cups. A single arm may have more than 200 suction cups.


Some octopi have tentacles 14 feet


in length. The mouth of an octopus is similar


to a parrot’s beak.


Jellyfish have no brains, heart, blood, bones or gills. The stingers of jellyfish are self-


contained firing mechanisms. They have tiny sensors that detect movements by other creatures. When triggered, sensors fire a barb called a nematocyst like a harpoon.


Jellyfish are found in every ocean and even in some freshwater lakes.


The long tentacles of jellyfish are armed with thousands of stinging cells.


The Lion’s Mane jellyfish is the biggest


jellyfish, growing to more than six feet in diameter.


Jellyfish have no control over their


stingers, even inflicting painful stings after death.


Jellyfish’s bodies are made of a


jellylike substance called “mesoglea” that are sandwiched between two layers of cells.


The Pacific Ridley is the smallest sea


turtle, measuring about 28 inches long and weighing about 80 pounds.


The largest sea turtle is the Leatherback,


reaching more than six feet long and weighing a ton.


Apart from sea snakes, sea turtles are


the only reptiles that spend virtually their entire lives at sea.


Join us for the FUN of Sailing!


Become bareboat charter certified while you explore the San Juan Islands on a spectacular week-long


Live-aboard Learn-N-Cruise. Combine learning with lots of fun!


We also offer Coastal Navigation, Advanced Coastal Cruising & Catamaran. Weekend classes too.


25 Years Experience School • Charters • Sales


48° NORTH, DECEMBER 2011 PAGE 26


sanjuansailing.com 1-800-677-7245 • Bellingham, WA • school@sanjuansailing.com


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