Dan and Christine dive My Secret Spot2

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PlayaCountryBoy

Contributor
Scuba Instructor
Messages
474
Reaction score
34
Location
Playa del Carmen, Mexico-Meso American Reef
# of dives
I'm a Fish!
Join me as I guide Dan and Christine over some of the lushest corals I have found around Playa. Check out the school of squid at the beginning of the video...Enjoy!:popcorn:
 
Nice dive! School of squid, multiple turtles, a moray out in the open, big sea horse and a sand dollar. I bet your clients were happy.

That brings me to a question. What exactly is a sand dollar? I see them on the beach, but never while diving. I guess it is time to google them.

Thanks for the video.

PH
 
Nice sized seahorse and a pretty big eel.
 
Ooh, that title sounds dirty...
:D
 
Nice dive! School of squid, multiple turtles, a moray out in the open, big sea horse and a sand dollar. I bet your clients were happy.

That brings me to a question. What exactly is a sand dollar? I see them on the beach, but never while diving. I guess it is time to google them.
PH

This is slightly off topic, but thought someone might find it interesting.

Sand dollar
From Wikipedia

Sand dollars (order Clypeasteroida) are flat, round marine animals related to sea urchins (echinoids), sea stars, and other echinoderms. The most common sand dollar, Echinarachnius parma, is widespread in circumpolar ocean waters in the northern hemisphere, from the intertidal zone to considerable depths.

A sand dollar has a rigid skeleton known as a "test", and the word sand dollar is also used for the test when it is found washed up on the beach after the death of the animal. When sand dollars are living, they have a skin of moveable spines covering the entire test. Movement is accomplished by the coordinated action of the spines. Like its close relative the sea urchin, the sand dollar has a set of five paired rows of pores; in sand dollars they are arranged in a petal-like pattern. These pores are perforations in the endoskeleton through which the podia, used in gas exchange, project from the body.


PH
 
https://www.shearwater.com/products/peregrine/

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