INVASIVE SPECIES
Invasive marine species  pose a threat to native species and ecosystems, usually through outcompeting, predation or disease spread. Alien species are deemed to be invasive if has the ability to spread causing damage to the environment, the economy, or health. Such species often thrive due to a lack of normal predation.
Lionfish - Pterois volitans/ miles
Location:
Reefs

Threat:
Predation on small reef fish. Rapid reproduction. Few local predators. Pelagic juveniles  travel long distances and rapidly recolonise.

Other:
Venomous spines
FISHES
PLANTS
Seagrass - Halophila stipulacea
Location:
Sand/ mud flats

Threat:
Possibly outcompete and displace native species e.g. Turtle Grass Thalassia testudinum

Other: