This awesome picture from Plankton Portal shows a siphonophore (referred to by some users on the project as a corncob) and a solmaris jellyfish. Siphonophores may look like one creature but they are actually a combined colony of multiple smaller animals. The most well known member of the family is the Portuguese Man o’ War, which has a venomous sting that can cause severe pain to humans.

Have a go at searching for these, and many other small sea creatures here

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