What is Street Creatures?  This is the game I run on Twitter every Friday. I’ve
collected all the past quizzes here in one place so you can either relive them, or play
them for the first time.

How does it work?  Provided are four, seemingly unrelated clues, that are all
connected by a wild organism that can be found in a city. Look at the four clues,
do some research, and when you think you’ve figured it out, click on ‘Answer’
to reveal what connects the clues, and how they are connected.

Follow me on Twitter to play #StreetCreatures live every Friday at 9am PST.

Quiz #43 Clues

Green Tide
Sea hare

Answer (Don't click until you've solved it)

Sea Lettuce

Green Tide:

Death by algae? It has happened when Ulva sp. have become too great, creating a green tide and washing up on shore. In France, the fumes from the decomposing sea weed caused a horse rider to pass out and his horse died.

Sea Hare:

These nudibranch wannabes munch on algae, including sea lettuce. Their coloration actually comes from the red algae they eat. Did you know they can also spew out ink as a defense?


It’s not called sea lettuce for nothing. Not only do mollusks eat sea lettuce, humans do as well. In Japan, sea lettuce nori is called aosa and it’s used as a seasoning.


The Ulva genus of seaweeds have blades that are distromatic, or only two cells thick.

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