not always-
https://www.youtube.com/watch?v=IlDt9gz2x8c
https://www.youtube.com/watch?v=pvzOAnfzR90
You watch the crab show in alaska- the sea floors aren’t always washboard either- There is evidence that there are massive deposited of sand which some claim created ‘land bridges’ over which the Israelites could have crossed- and the following site states that the sea floor is made of muddy sludge created from the eroding surrounding mountains on the sides of the sea:
The videos looked like sand to me-
.
Israel didn’t cross any land bridge.
Read what the word really says.
The sea was sufficiently deep to completely trap and drown the entire Egyptian army when Yehova released the winds that were holding the water back.
It was a real supernatural miracle.
.