Sea life under Narooma wharf fascinates hundreds

Urchins, snails, sea stars, nudibranchs and even an octopus were among the various creatures carefully brought to the surface and shown off.

Touch tanks, underwater video footage and other marine ecosystem information were shared as part of the What's Under the Wharf event, hosted by Nature Coast Marine Group.

The citizen science group collaborated with the Marine Parks Authority, DPI and Eurobodalla Shire Council to host the school holiday event.

As the huge crowds circled the town's main boat wharf, three snorkellers from the host groups explored the crystal clear water underneath, bringing up examples of the multitude of lifeforms that call it home.

Others explained what each creature was, how they moved, and how they fed, sharing their knowledge on other key info with the hordes of children, big and small, keen to get up close.

James Caffery, one of NCMG's snorkellers on the day, was kept busy not only bringing up fascinating marine life but also describing some of the more obscure examples to the waiting crowds.

"We're finding all sorts. We brought up an octopus, there have been nudibranchs, sea hares and a brittle star. There's so much," Mr Caffery said.

"There's over 250 species under the wharf here, just in this one little spot.

"We've done a lot of citizen science here and logged all of them. That's including seagrass as well as all the little critters and fish.

"We bring up what we can and teach people a little bit about what lives under here."

An underwater remote-controlled camera was also demonstrated on the day, as was the amount of human debris and litter that commonly impacts our marine environment.

Find out more at ncmg.org.au.