Time the visit and set up a cool base first
Beach safety is decided before your dog touches the sand. Go early in the morning or later in the evening on hot days, check whether dogs are allowed on that stretch and where lead rules apply, and set up shade, a windbreak and a bowl of fresh water before you let him explore. Press the back of your hand to the sand for several seconds where you plan to walk; if it is uncomfortably hot for you, it will burn his paws, so stick to wet sand near the water, carry him across hot stretches if he is small, or postpone the walk. Offer small drinks often rather than letting him tank up on seawater while he plays, because gulping salt water commonly leads to vomiting and diarrhoea that can spoil the rest of the day and, in larger amounts, make a dog quite unwell.
Manage swimming, tides and the space around you
Treat the sea with the same respect as any open water, plus tides. Keep him in shallow water where he can stand, stay beside him rather than watching from a towel, and call him out well before he is tired, since a dog chasing a ball into the surf will keep going long past sensible limits. Check tide times before you walk along the shore below cliffs or across a wide flat beach, and know your exit points, because incoming tides cut off coves and trap walkers against rock. Use a long line near cliff paths, crowded family areas, lifeguarded swimming zones and the car park, and keep him away from stranded jellyfish, fish hooks in the rocks, and other dogs' picnics. After swimming, rinse salt and sand from his coat, paws and ears and dry him properly before the drive home.
Patrol the tide line like a scavenger would find it
To a dog, the tide line is a buffet with hidden costs. Walk it with him on a shorter lead and trade generously for dropped finds, because the usual haul includes cooked bones from barbecues, sweetcorn cobs, fish remains, bait, seaweed in large tangled ropes, palm-sized stones and sharp shells. Corn cobs and bones are especially risky finds that can obstruct or injure a dog who swallows them, so a reliable drop and recall at the beach is worth practising at home first. Keep him off rock pools where a slip can cut pads, watch for adder-prone dune grass in warm weather in areas where adders live, and bag and bin anything dangerous you pass, since the next dog along the beach may be less closely watched than yours.
Know your help points before anything goes wrong
Save the number and location of the nearest vet to the beach in your phone before you set off, especially on holiday, and note the beach access point name or number lifeguards use so you can direct help accurately. Contact a vet promptly if your dog eats a cob, bone or bait, vomits repeatedly after drinking seawater, limps on a cut pad that will not stop bleeding, overheats with heavy panting and disorientation on a hot day, or seems subdued in the hours after a long swim. Keep him cool, shaded and resting while you travel, and do not give him a big meal or a vigorous evening walk to round off the day. Travelling with his vaccination history, regular care notes and health details together in KinsLe's Pet Passport lets an unfamiliar vet see the full picture without a string of phone calls home.