(What I Believe Were) Mangrove Seeds

[PalmTreeDude]

So I was walking on the beach and I saw some Mangrove seeds washed up (I saw them in the water the day before but did not know what they were before I looked them up) on the sand. There were some little kids picking them up and throwing them around. I got two and brought them to an area by the sand dunes that I saw was really wet and soggy. I stuck them in the ground there hoping that I possibly saved some mangrove trees (the beach has lots of people on it and there is no way they would grow there without being ripped out or something). I only took a picture of when I found them. Are they even mangrove seeds? 

Edited August 25, 2018 by PalmTreeDude

[Hillizard]

1 hour ago, PalmTreeDude said:

So I was walking on the beach and I saw some Mangrove seeds washed up (I saw them in the water the day before but did not know what they were before I looked them up) on the sand. There were some little kids picking them up and throwing them around. I got two and brought them to an area by the sand dunes that I saw was really wet and soggy. I stuck them in the ground there hoping that I possibly saved some mangrove trees (the beach has lots of people on it and there is no way they would grow there without being ripped out or something). I only took a picture of when I found them. Are they even mangrove seeds? 

Those definitely look like Rhizophora mangle propagules. Here's a link on how to grow them: http://mangrove.at/rhizophora-mangle_red-mangrove.html  Just stick the pointy ends in muddy/mucky soil. They will do well in pots indoors for years in bright light. They don't have to be submerged in salt/brackish/fresh water either. Below is a picture of my own mangrove 'starter forest.' 

 

[Nj Palms]

You can plant them in an aquarium and make a whole mangrove ecosystem!