What is this black beach blob? There were hundreds of them washed up on the beach in Melbourne. They look like a rock, have a rubbery texture and are filled with black
What's that weird black stuff all over the beach? Nothing to worry about, officials say - nj.com
Tunicates….What is that orange blob? | Danielle's Dives Blog
The Secret Life of 'Sea Pork,' The Organ-Like Blobs on Your Beach - Atlas Obscura
May Day! The Wedge Black Ball Flags Are Flying: Bodysurfers Take Prior - Slyde Handboards
What is the black ball flag?
Newport Beach debates 'blackball' surf rules – Orange County Register
Mysterious, Yellow, Sponge-Like Globs Are Fouling French Beaches - Atlas Obscura