[editor-surveyor]

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BTW, that bottom is not sandy.

Sand bottoms always have a wavy surface that looks kind of like a washboard, and I didn’t see any of that. There’s just a little aggregate here and there.
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[Bob434]

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:

http://worldoceanreview.com/en/wor-3-overview/mineral-resources/massive-sulphides/metal-rich-brines-in-the-red-sea/

The videos looked like sand to me-