Y dolffiniaid trwyn potel yn nyfroedd Prydain yw’r rhai mwyaf o’u bath – maen nhw angen gallu ymdopi â’n dŵr oer ni! Dyma greaduriaid cymdeithasol iawn ac maen nhw’n fwy na pharod i nofio ochr yn…

Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

Sand eels are a hugely important part of our marine ecosystem. In fact, the fledgling success of our breeding seabirds entirely depends on them.

One of the UK’s rarest marine species, this giant of the rocky shore is a very special fish.

This seagrass species is a kind of flowering plant that lives beneath the sea, providing an important habitat for many rare and wonderful species.