The Mediterranean fanworm is a pest that forms dense beds and is likely to out-compete other species for food and space.
“That’s why it’s so important boaties clean their hulls when entering and leaving the region. If they don’t and pests get through, it risks the recreational and cultural marine environment that we all love,” McNatty said.
She said the most common pests in Hawke’s Bay were the Mediterranean fanworm and the clubbed tunicate.
McNatty, who has worked for HBRC for 15 years in various roles within biosecurity, says her job is hugely variable.
“If I’m in the office, I’m usually working online with Top of the North Marine Biosecurity Partnership. We meet to share experiences and information.
“Otherwise, I’m out and about checking vessels, in the Ahuriri inner harbour, mainly.”
Mediterranean fanworms can form dense beds that are likely to out-compete other species and interfere with biological processes.
She said they don’t check every vessel, just high-risk ones.
“We look at the top of the waterline and if it’s fouled, we get divers in to have a look.
“Sometimes vessels submit forms and, if they haven’t been hauled out of the water and cleaned for a while or if they are from a high-risk region, we would check them.
“Lots of work goes into reducing the risk of these pests entering and establishing in the Bay.”
The operator of a vessel entering the waters of HBRC must ensure the hull (this includes the hull area, niche areas and the wind and waterlines) or any structure or navigation aid of any origin is sufficiently cleaned and antifouled so there is no more than a slime layer and or goose barnacles.
She said if anyone noticed something out of the ordinary in those waters, they should contact HBRC or the Ministry for Primary Industries (MPI).
McNatty said invasive marine plants were also a problem.
Keep an eye out for exotic caulerpa species and report suspected sightings to HBRC or MPI.
“Caulerpa has recently been found up north. That will be a huge problem if it is given the chance to establish here and have a big impact.
“It forms a dense field and could alter the ecosystem.”
McNatty, who has a master’s degree in marine biology and ecology, loves her job.
“Every day is different, with new challenges and meeting new people.”
Born and bred in Hawke’s Bay, she says the region is lucky to not have many marine pests.
“But we must remain vigilant and keep vessels clean.”
She said if a vessel entered Hawke’s Bay waters and an inspection found the hull was fouled, they would work with the owner to get the vessel cleaned as soon as possible or make other arrangements to reduce the biosecurity risk.
“Where the vessel has come from, how fouled it is, size of vessel, etcera, are considerations we take into account when looking at what course of action we take.
“If a pest is found on a vessel we remove it as soon as possible – how this is done depends on the species and the amount of the pest on the vessel and other fouling.
“If a vessel is fouled or has a marine pest, the cost to clean the vessel and/or remove the pest is at the owner’s expense.”
She said most people were happy to have their hulls inspected.
“We do get people who are not happy about it, but we can usually talk them around once we explain why and what we are doing.”
She said if boats were sitting in the harbour with dirty hulls, they weren’t really a risk.
