Stingrays Skates part 2 http www bbc co

Stingrays & Skates part 2 http: //www. bbc. co. uk/nature/life/Stingray Pfauenaugen-Stechrochen_-_Ocellate_river_s wikipedia 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 larger organisms in the ocean Eagle Ray

Eagle rays �are Cartilaginous fish �Live in open ocean rather than on sea bottom �Feed on mollusks and crustaceans, crushing shells with flattened teeth �Can breach the water several meters above the surface �Longer tails than other rays �Ovoviviparous, giving birth to 6 pups at once �Range from 48 cm (19 in) to 9 m (30 ft) in length Wallpapersrus. com

Manta ray scientific classification �Kingdom: Animalia �Phylum: Chordata �Class: Chondrichthyes �Subclass: Elasmobranchii �Superorder: Batoidea �Order: Myliobatiformes �Family: Myliobatidae �Subfamily: Mobulinae �Genus: Manta upload. wikimedia. org/wikipedia/commons/d/df/Manta_birostris-Thailand 4. jpg

Manta rays �are large eagle rays �Devil rays and manta rays are filter plankton feeders �Swim with mouths open �Have triangular pectoral fins, horn shaped cephalic fins] �Found in temperate, and tropical waters �Range in size from 5. 5 m to 7 m or 18 to 23 feet �M. Birostris migrates across open ocean single or in groups �M. alfredi is resident and coastal �Gestation is over 1 year, producing live pups �Visit 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=6 a. IAVIrq. Eor. Hgw. Sg 54 CADg&sqi=2&pjf=1&ved=0 CAYQ_AUo. AQ&biw=1051&bih=703

Ray vs Skate

Skate Anatomy

Skates �type of "ray" that differ considerably from stingrays �do not possess venomous barbs �have sharp thorns located on dorsal surface and tails �primarily live in marine habitats and rarely enter brackish or freshwater environments

Skate Classification �Kingdom: Animalia �Phylum: Chordata �Class: Chondrichthyes �Subclass: Elasmobranchii �Superorder: Batoidea �Order: Rajiformes. Berg, 1940 �Family: Rajidae

Egg cases Prominent 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 Dissection � http: //serchomeschool. wordpress. com/2013/02/01/sharks-and-skatesfinal-dissection-pre-class-materials/ � � http: //pcwww. liv. ac. uk/aquabiol/Dissect_Prac/skate. htm dissection photos from liverpool uk � � http: //www. marinebiodiversity. ca/skatesandrays/internal%20 anatom y. htm � dissection details from center for marine biodiversity � � http: //davidscience. newdesignhigh. com/2012/02/skate-externalanatomy. html skate external anatomy diagrams…very good! � � Sharks and Skates: Skate Dissection from serc � http: //serchomeschool. files. wordpress. com/2013/02/skate. gif pic

Other Skate websites �http: //www. youtube. com/watch? v=Nbuu 1 Fa-c 1 k national geographic video includes stingray city 2 min �http: //www. youtube. com/watch? v=ln 2 ru. WT-w 54 stingray and spiny lobster 1. 5 min amateur �info in glossopedia http: //test. glossopedia. org/skatesand-rays/

Other skate websites �http: //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. htm a good page to get some idea of what the dissection will look like. �http: //www. youtube. com/watch? v=Nbuu 1 Fa-c 1 k a nice National Geographic video about stingrays (2 minutes) �http: //www. youtube. com/watch? v=51 f 4 UY 2 TYX 8 this is a short video (2 min) of a Ray giving live birth (many lay eggs too, but not this one!)