in away there is no one common threat. most species are restricted to 2 or 3 locations. if they are disturbed by storms, overfishing, pollution, etc. then they are gone.
most seashells and sea cucumber
horses
no
Uh, if they didn't breed, how are they supposed to have more sea horses? Yes, sea horses breed.
Sea horses can mostly be harmed by Crabs and Tuna fish witch both eat sea horses
no sea horses and normal horses are completely different. sea horses get there name because they are sea creatures that somewhat look like actual horses that you ride
The largest species of sea horses are about 13cm
They all mate for life.
No they are not from the same family, sea horses are a special kind of fish, horses are mammals.
There are only male sea horses no female
Yes, sea horses do feed and protect their kids. Both male and female sea horses can have babies. they can have up to 1000 in one day and they come out of the sea horses stomach
If you are looking for a common noun it would most likely be"sea".