The weekend’s wildlife highlights were; Minke whale, many Common Dolphin and 20++ Harbour Porpoise mostly feeding a mile or so offshore with an attendant “frenzy” of seabirds! Oddly this frenzy is mostly Shearwaters – over 2000 Manx, up to 100 Great (counted from Gwennap Head), c.200 Cory’s , 50++ Sooty, and increasing numbers of Balearic Shearwaters – 5 from our Minack trip on Sunday evening. There are relatively few Gannets associating with this frenzy which implies the birds are feeding on small prey such as sand-eel or fry, fine for the Minke Whales but unusual for dolphins. A few presumed Blue-fin Tuna have been feeding in the same area and, although still not numerous, Ocean Sunfish are increasing again with 4 on Sunday.
Spring continues to be a bit of a mixed-bag in the Bay. We have had worse weather lately than we saw for much of the winter and sea temperatures are lower than this time last year. As a result we have not managed to get out as much as we’d like and there are major differences in what we are managing to find! The lack of jellyfish and sunfish is presumably due to the colder water and less extensive plankton blooms, but on the upside we have seen several Basking Sharks – probably for the same reason- which is a vast improvement on the last two years. Common Dolphins have remained offshore, now in smaller pods, and the less predictable group of Bottlenosed Dolphins have put in welcome performances off the Mount in the eel-grass, hunting cuttlefish. Risso’s Dolphins haven’t done that this May, and Porpoise have only been further west out of the bay. It is tempting to think the latter may be avoiding the Bottlenoses , but choppy weather always makes Porpoises harder to see.