人和海豚都是哺乳动物，都是进行有性生殖中卵式生殖。即通过交配，体内受精形成受精卵，由受精卵通过胚胎发育变成胎儿，胎儿出生后由母体进行哺乳发育长大成成体。人和海豚都属于哺乳纲，体内受精，胎生哺乳。是进行有性生殖的动物。有性生殖包同配生殖，异配生殖及卵式生殖。
忙碌路猫卤職忙聵炉茅卤录氓聬聴
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氓楼陆Good!!
Dolphins are often regarded as one of Earth's most intelligent species
though it is hard to say just how intelligent dolphins are as straightforward parisons of species' relative intelligence are plicated by differences in sensory apparatus
response modes
and nature of cognition Furthermore
the difficulty and expense of doing experimental work with large aquatics me that some tests that could meaningfully be done still have not been carried out
or have been carried out with inadequate sample size and methodology See the "cetacean intelligence" article for more details Dolphins often leap above the water surface
sometimes performing acrobatic figures (eg the spinner dolphin) Scientists are not quite certain about the purpose of this behavior
but it may be to locate schools of fish by looking at above water signs
like feeding birds They could also be municating to other dolphins to join a hunt
attempting to dislodge parasites
or simply doing it for fun Play is a very important part of dolphins' lives and they can often be observed playing with seaweed or play-fighting with other dolphins They even harass other locals
like seabirds and turtles Dolphins also seem to enjoy riding waves and frequently 'surf' coastal swells and the bow waves of boats They are also willing to occasionally approach hum and playfully interact with them in the water In return
some human cultures such as the Ancient Greeks treated them with wele; a ship spotting dolphins riding in their wake was considered a good omen for a ooth voyage There are many stories of dolphins protecting shipwrecked sailors against sharks by swimming circles around them Dolphins surfing at Snapper Rocks
Queensland
AustraliaDolphins are social
living in pods (also called "schools") of up to a dozen individuals In places with a high abundance of food
pods can join temporarily
forming an aggregation called a superpod; such groupings may exceed a thousand dolphins The individuals municate using a variety of clicks
whistles and other vocalizations They also use ultrasonic sounds for echolocation Membership in pods is not rigid; interchange is mon However
the cetace can establish strong bonds beeen each other This leads to them staying with injured or ill fellows for support Because of their capacity for learning
dolphins have been employed by hum for any number of purposes Dolphins trained to perform in front of an audience have bee a favorite attraction in dolphinaria
for example SeaWorld Such places may sometimes also provide an opportunity for hum to interact very closely with dolphins Dolphin-human interaction is also employed in a curative sense at places where dolphins work with autistic or otherwise disabled human children The military has employed dolphins for various purposes from finding mines to rescuing lost or trapped hum Such military dolphins
however
drew scrutiny during the Vietnam War when rumors circulated that dolphins were being trained to kill Vietnamese skin divers Reports of cooperative human-dolphin fisheries date back to Pliny A modern human-dolphin fishery was reported in Laguna
Santa Catarina
Brazil in 1990
氓聫聜猫聙聝: en /wiki/Dolphins#Feeding
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