Pfauenaugen-Stechrochen_-_Ocellate_river_s wikipedia stingray

Stingrays & Skates part 2

http://www.bbc.co.uk/nature/life/Stingray

Stingray city

Newswise.com

discountexcursions.com

Rays:Include the mantas with wingspans exceeding

8 meters (26 feet)Mantas feed on plankton like many other

largerorganisms in the ocean

Eagle Ray

Eagle rays are Cartilaginous fishLive in open ocean rather than on sea bottomFeed on mollusks and crustaceans, crushing

shells with flattened teethCan breach the water several meters above the

surfaceLonger tails than other raysOvoviviparous, giving birth to 6 pups at onceRange from 48 cm (19 in) to 9 m (30 ft) in

length

Wallpapersrus.com

Manta ray scientific classification

Kingdom: AnimaliaPhylum: ChordataClass: ChondrichthyesSubclass: ElasmobranchiiSuperorder: BatoideaOrder: MyliobatiformesFamily: MyliobatidaeSubfamily:MobulinaeGenus: Manta

upload.wikimedia.org/wikipedia/commons/d/df/Manta_birostris-Thailand4.jpg

Manta rays are large eagle raysDevil rays and manta rays are filter plankton feedersSwim with mouths openHave triangular pectoral fins, horn shaped cephalic

fins]Found in temperate, and tropical watersRange in size from 5.5 m to 7 m or 18 to 23 feetM. Birostris migrates across open ocean single or in

groupsM. alfredi is resident and coastalGestation is over 1 year, producing live pupsVisit cleaning stations for removal of parasites

Guitarfish- Ray cousin

https://www.google.com/search?q=guitarfish&espv=2&source=lnms&tbm=isch&sa=X&ei=6aIAVIrqEorHgwSg54CADg&sqi=2&pjf=1&ved=0CAYQ_AUoAQ&biw=1051&bih=703

Ray vs Skate

Skate Anatomy

Skatestype of "ray" that differ considerably from

stingraysdo not possess venomous barbs have sharp thorns located on dorsal surface

and tailsprimarily live in marine habitats and rarely

enter brackish or freshwater environments

Skate ClassificationKingdom: AnimaliaPhylum: ChordataClass: ChondrichthyesSubclass: ElasmobranchiiSuperorder: BatoideaOrder: RajiformesBerg, 1940Family: Rajidae

Egg casesProminent difference is that all stingrays give birth to live young while skates reproduce by laying eggs in leathery capsules sometimes called mermaid's purses

http://www.sharktrust.org/en/great_eggcase_hunt/view_folder.asp?folderid=6241&rootid=6241&depth=1&toptab=6  A resource about skate and shark egg cases and tracking them. This is from the UK but a neat site to click around. Look for the anatomy of a case and how it’s put together.

Skate Dissectionhttp://serchomeschool.wordpress.com/2013/02/01/sharks-and-skat

es-final-dissection-pre-class-materials/  http://pcwww.liv.ac.uk/aquabiol/Dissect_Prac/skate/skate.htm

dissection photos from liverpool uk  http://www.marinebiodiversity.ca/skatesandrays/internal%20anato

my.htm

dissection details from center for marine biodiversity  http://davidscience.newdesignhigh.com/2012/02/skate-external-an

atomy.html skate external anatomy diagrams…very good!

  Sharks and Skates: Skate Dissection from serchttp://serchomeschool.files.wordpress.com/2013/02/skate.gif pic

Other Skate websiteshttp://www.youtube.com/watch?v=Nbuu1Fa-c

1k national geographic video includes stingray city 2 min 

http://www.youtube.com/watch?v=ln2ruWT-w54 stingray and spiny lobster 1.5 min amateur

info in glossopedia http://test.glossopedia.org/skates-and-rays/

Other skate websiteshttp://www.globio.org/glossopedia/article.aspx?art_id=

47 this is a great place to start to learn about skates and rays.

http://pcwww.liv.ac.uk/aquabiol/Dissect_Prac/skate/skate.htm a good page to get some idea of what the dissection will look like.

http://www.youtube.com/watch?v=Nbuu1Fa-c1k a nice National Geographic video about stingrays (2 minutes)

http://www.youtube.com/watch?v=51f4UY2TYX8 this is a short video (2 min) of a Ray giving live birth (many lay eggs too, but not this one!)