Hey guys it's Kerry lots of my favorite sea animals today
how do sharks detect prey? sharks use the senses of smell which is
chemoreception vision hearing
the lateral line system and electro reception for capturing prey
cow nose ray it is a species of eagle ray the cow
nose ray has a spine with a toxin close to the rays body it is coated with a
weak venom leatherback sea turtle is the largest of
all living turtles it lacks a bony shell and its carapace is covered by skin and
oily flesh which is where it gets its name
blue shark they are viviparous and are noted for large litters of 25 to over
100 pups vivaparity is the development of the
embryo inside the body of the parent leading to a live birth
tiger shark is amongst the largest extant sharks it ranks just behind the
whale shark the basking shark and the great white shark
ammonite is an extinct marine mollusk they are more closely related to living
colioids such as octopus squid and cuttlefish than to the living nautilus
octopus like other cephalopods it is bilaterally
symmetric with two eyes and a beak with its mouth at the center point of the
eight limbs with sharks the lateral line system
which all fish possess allows them to detect waves of pressure
or mechanical disturbances in the water Please subscribe and turn on
notifications the starfish have tube feet operated by
a hydraulic system and a mouth at the center of the oral or lower surface
loggerhead sea turtle the shell is divided into two sections
carapace and plastron the carapace is further divided into
large plates or scutes they cannot retract their heads or
flippers into their shells walrus
they maintain a high body weight because the blubber stored underneath their skin
keeps them warm and the fat provides energy to the wallrus
they lack external ears
humpback whale the head and lower jaw are covered with
knobs called tubercles which are hair follicles and are characteristic of this
species the fluted tail which typically rises
above the surface when diving has wavy trailing edges
another tiger shark
killer whale calf an individual killer whale can often be
identified from its dorsal fin and saddle patch
variations such as nicks scratches and tears on the dorsal fin and a pattern of
white or grey in the saddle patch are unique
they have exceptional echo location abilities detecting the location and
characteristics of prey and other objects in the water by emitting clicks
and listening for echoes
spiny lobster in some parts of the world it is called
a crayfish they typically have a slightly
compressed carapace lacking any natural ridges they tend to live in crevices of
rocks and coral reefs they also like chelae or claws like the
true lobster clown trigger fish is diurnal which
means it's awake during the day feeding and rests at night time
it is solitary and defends its territory jellyfish
the bell can pulsate to provide propulsion and highly efficient
locomotion the tentacles are armed with stinging
cells narwhal is most closely related to the
beluga whale together these two species comprise the
only extant members of the family Monodontidae
the tusk is formed by a protruding canine teeth
shrimp or prawn they are an important part in the food chain
they are a source of food for larger animals ranging from fish to whales
the lemon shark often feeds at night these sharks use electro receptors to
help find their prey the females give birth to live young
the ampullae of lorenzini are receptors that can detect weak electric fields
this sense is unique to sharks and their relatives this would help a shark find a
stingray buried in the sand queen trigger fish
is usually found in coral and rocky reefs
it preys on a variety of invertebrates its favorite is the sea urchin
it can grow to 24 inches or 60 centimeters
killer whale or orca they are not considered a threat to
humans but there have been cases of captive orcas killing or injuring their
handlers at marine theme parks
bull shark they are wider and heavier than any
other requiem sharks of comparable length and a grey on top and white below
frogfish is a member of the anglerfish family
many species can change color they are small short and stocky and sometimes
covered in spinals and other appendages to aid in camouflage
the emperor penguin is the tallest and heaviest of all living penguin species
the male emperor penguin must withstand the extreme antarctic winter cold for
more than two months while protecting his egg
sea elephant the aggregating colonies on land during
the breeding season each dominant male controls access to
mating opportunities with a group of females called a harem
males use their large inflatable noses during the breeding season to resonate
sound when vocally threatening each other
less dominant males are restricted to the fringes of a colony and will try to
gain access to the females the male will mount from behind throw a
flipper over the side of a female grip her neck in his teeth and begin
copulation she will spread her hind flippers
average time for copulation is 5 minutes the male's penis has a baculum bone
megaloden it was a robust looking shark and they had a similar build to the
great white shark the jaws may have been blunter and wider than the great white
shark and the fins would have been similar in shape also thicker due to its
size it had small deep set eyes its large size may have been due to
climatic factors and the abundance of large prey
great white shark is one of only a few sharks known to regularly lift its head
above the sea surface to gaze at other objects such as prey
this is known as spy hopping the bull shark is diadromous meaning
they can swim between salt and fresh water with ease
they are able to adapt to a wide range of salinity
right whale is just behind the blue whale in sheer
body mass they were very popular with whalers
because they had a plentiful supply of oil and baleen
during courtship males gather into large groups to
compete for a single female suggesting that sperm competition is an important
factor in mating behaviour manta ray
they have triangular pectoral fins horn shaped cephalic fins and large
forward-facing mouths they are filter feeders and eat large
quantities of zooplankton dugong
it eats seagrasses it is restricted to the coastal habitats which supports
seagrass meadows it has a fusiform body with no dorsal
fin or hind limbs the fore limbs or flippers are paddle-like
a shark's tongue appears to be fairly useless except for
the cookie cutter shark which uses the tongue to whip chunks of flesh out of
their prey
tiger shark their teeth are unique with very sharp
pronounced serrations and an unmistakable sideways pointing tips
such dentition has developed to slice through flesh bone and even turtle
shells short fin mako shark
it is on record as the fastest swimming shark
capable of bursts of speed up to 68 kilometers per hour
mako shark there are two living species
the short fin mako shark and the much rarer long fin mako shark
piranha all piranhas have a single row of sharp teeth in both jaws
the teeth are tightly packed and interlocking
horseshoe crab is not a real crab
they live primarily in and around shallow coastal waters on soft sandy or
muddy bottoms they are found on the ocean floor
searching for worms and molluscs the sperm whale
is a pelagic mammal meaning it lives in the open ocean
it is the largest of the tooth whales and the largest toothed predator
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