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No, quite the opposite! All documented cetacean species have precocial young, in that they are mobile and active right after birth, much like horses or cows. For a species that is bound to the ocean, this is a requirement in order to survive, if a young porpoise could not move on it's own, it would not be able to swim up to the surface take breaths or keep up with it's mother. Likewise, the similarly water-bound sirenians (manatees and dugongs) are also precocial at birth.
What else can I help you with?
Is a sparrow altricial or precocial?
They are Altricial as they cannot fend for themselves straight away :)
How many cetaceans are there?
84 living cetaceans (not extinct) though there are 7 extinct cetaceans
Are young clownfish precocial or altricial?
Unfortunately, clownfish (eggs) are precocial and that gets them a quick death by being eaten by other fish soon after birth. The only thing that will keep them safe is the anemone that protects their parents and the symbiotic relationship they could have if they stay in its safety.
Is a swallow altricial or precocial?
Swallows are precocial. This means that swallows are very developed upon hatching.
Is a lapwing precocial or altricial?
A Lapwing birds are precocial. This means that lapwings are very developed at hatching.
Who are the cetaceans?
the answer is not "who" but actually "what are" Cetaceans are marine mammals
Do porpoises lay eggs or by live birth?
A porpoise is an aquatic mammal. Cetaceans give birth to live young.
Are all cetaceans mammals?
Yes, by definition cetaceans are an order of mammals.
Is goose altricial or precocial?
altricial
Is a crow precocial?
Crows are altricial
Is a crow precocial or altricial?
altricial
Is crow precocial or altricial?
altricial
