Sweet Sirenians
"mermaids of the sea" are really what?
manatees
Scientists call these mammals pinnipeds (there are three)...
Sea lions, seals, and walruses
what does Osteichthyes in Greek mean!?
Bony Fish!
sharks and rays have what type of fins?
thick and rubbery
what kind of rays are considered true rays?
sting rays
What is the main difference between a manatee and a dugong?
the shape of their tail. (manatee's is rounded like a beaver's tail and dugong is more triangular like a whale's tail)
when pinnipeds haul themselves out of the water onto ice or land this is called a ____(what)?
a haul out
fish scales are kind-of like what human what?
fingernails
what are the scales of sharks and rays like?
skin teeth
which ray did sailors call the devil fish?
manta ray
What is one of the biggest threats to manatees?
boaters in shallow warm waters
what do we called a breeding grounds for pinnipeds?
a rookeries
warm water molecules are ______ apart, and
cold water molecules are ____ together.
farther, closer
what does the Ampullae of Lorenzini sense?
electricity
This kind of ray can deliver a powerful electric shock....what is it called?
electric ray
what do manatees do when they meet one another?
they kiss
where is the largest fur seal rookery in the world?
Cape Cross, South Africa
the lateral line
when a shark goes into a sort of trance and cannot move or defend itself, it is called what?
tonic immobility
what does agnatha mean?
without jaw
what is the word for animals that eat only plants?
herbivores (manatees are mainly herbivores)
what helps a walrus haul out of the water?
it's tusks
sharp quills, venomous spines, or bold colored patterns that that tell predators to stay away!
aposematism
what is the greek name for fish with bones made out of cartilege
chondrichthyes
what animal performs a disgusting trick by vomiting massive amounts of slime?
the hagfish