Hey guys it's Kerry I'm talking about marine life today sea
animals in particular they include birds
fish reptiles sea lions seals sharks and rays
squid and octopus whales and dolphins and much more
spiny lobster they have a slightly compressed carapace
lacking any lateral wedges they live in rock crevices and coral
reefs only occasionally venturing out at night to seek food
megaloden why did megalodon go extinct
a dramatic change in the climate global water temperature dropped and
that reduced the area where megalodon a warm water shark could thrive
because of the changing climate entire species that megalodon preyed upon
vanished forever anglerfish
they have a modified luminescent fin ray which acts as a lure for other fish the
luminescence comes from symbiotic bacteria which are thought to be
acquired from the sea water pufferfish most species are toxic and some are
among the most poisonous vertebrates in the world
weedy sea dragon the females lay around 120 eggs onto the
brood patch located on the underside of the male's tail
the giant pacific octopus is the largest known octopus species
the soft body can radically alter its shape enabling octopuses to squeeze
through small gaps they trail their eight appendages behind
them as they swim whale shark
they have internal fertilization and produce life young
males can be distinguished by the presence of two claspers near the pelvic
fin these organs are absent in females
whale sharks are fish and obtain oxygen via their gills
they have no physiological requirement to swim at the surface unlike air
breathing whales and dolphins it is one of the only three filter
feeding sharks the other two being the basking and megamouth sharks
horseshoe crab is actually not a crab and is more closely related to spiders
and scorpions
flying fish they can make powerful self-propelled leaps out of the water
where their long wing-like fins enable gliding for considerable distances
jellyfish
tiger shark females mate once every three years
they breed by internal fertilization the male inserts one of his claspers
into the female's genital opening which is called cloaca acting as a guide for
the sperm the male uses his teeth to hold the
female still during the procedure often causing the female considerable
discomfort the tiger shark is the only species in
its family that is ovoviviparous its eggs hatch internally and the young are
born live when fully developed
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bull shark often dwell in very shallow waters
and are found in many types of habitats they are territorial by nature and have
no tolerance for provocation they are more dangerous to humans than
any other species of shark with reproduction the females show their
readiness to mate by reducing their speed and swimming with their tails in a
more upward position and their snout pointing slightly down
the male will then come up to the female and place its snout below the female's
vent salmon typically salmon are anadromous
which means they hatch in fresh water migrate to the ocean then return to
fresh water to reproduce
manatee they are large fully aquatic mostly
herbivorous marine mammals sometimes known as sea cows
notice the rounded tail flipper
elephant seal they are marine mammals classified under
the order pinopedia which in latin means feather or fin-footed
seals are considered true seals and fall under the family Phocidae
dugong they are related to manatees and are similar in appearance and behaviour
they graze on underwater grasses day and night rooting for them with their
bristled sensitive snouts and chomping them with their rough lips
these mammals can stay underwater for six minutes before surfacing
megaloden was a prehistoric monster shark that first appeared about 20
million years ago they had a massive bite force and their
teeth were thick and robust built for grabbing prey and breaking bone it is
the largest prehistoric shark to have ever existed and one of the most
powerful predators on earth
right whale they have the largest penis and testes
of any whales the penis can measure up to 2.7 meters
and the testis up to two meters in length
and weighing up to 525 kilograms by far the largest of any animal on earth
grey whale they are often hosts to dense infestations of skin parasites
which gives their skin a rough and motley appearance
blue whale the mottling pattern on their back is
highly variable individuals have a unique pigmentation
pattern along the back in the region of the dorsal fin which can be used for the
purpose of identification
the blue whales two blow holes create a tall columnist spray which can be seen
12 metres above the water's surface
the blue whale is the largest known animal to have ever existed
clown trigger fish is a demersal marine fish
they can grow up to 50 centimeters
clownfish in the wild they all form symbiotic
mutualisms with sea anemones
seahorse they propel themselves by using small
fins on their back and steer with pectoral fins either side of their head
great white shark
killer whale they are the largest member of the
dolphin family they are top level carnivores
goblin sharks are bentho pelagic creatures that inhabit upper continental
slopes submarine canyons and sea mounts throughout the world
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